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                                 UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                   FORM N-CSR

                   CERTIFIED SHAREHOLDER REPORT OF REGISTERED
                        MANAGEMENT INVESTMENT COMPANIES



		Investment Company Act file number 811-07318

                          Pioneer Series Trust VIII
               (Exact name of registrant as specified in charter)


                       60 State Street, Boston, MA 02109
              (Address of principal executive offices) (ZIP code)


            Terrence J. Cullen, Pioneer Investment Management, Inc.,
                       60 State Street, Boston, MA 02109
                    (Name and address of agent for service)


Registrant's telephone number, including area code:  (617) 742-7825


Date of fiscal year end:  November 30


Date of reporting period:  December 1, 2014 through May 31, 2015


Form N-CSR is to be used by management investment companies to file reports with
the Commission not later than 10 days after the transmission to stockholders of
any report that is required to be transmitted to stockholders under Rule 30e-1
under the Investment Company Act of 1940 (17 CFR 270.30e-1).  The Commission may
use the information provided on Form N-CSR in its regulatory, disclosure review,
inspection, and policymaking roles.

A registrant is required to disclose the information specified by Form N-CSR,
and the Commission will make this information public. A registrant is not
required to respond to the collection of information contained in Form N-CSR
unless the Form displays a currently valid Office of Management and Budget
("OMB") control number. Please direct comments concerning the accuracy of the
information collection burden estimate and any suggestions for reducing the
burden to Secretary, Securities and Exchange Commission, 450 Fifth Street, NW,
Washington, DC 20549-0609.  The OMB has reviewed this collection of information
under the clearance requirements of 44 U.S.C. ss. 3507.


ITEM 1. REPORTS TO STOCKHOLDERS.


                        Pioneer International
                        Value Fund

--------------------------------------------------------------------------------
                        Semiannual Report | May 31, 2015
--------------------------------------------------------------------------------

                        Ticker Symbols:

                        Class A     PIIFX
                        Class C     PCITX
                        Class Y     INVYX

                        [LOGO] PIONEER
                               Investments(R)


                      visit us: us.pioneerinvestments.com


Table of Contents


                                                                           
President's Letter                                                             2

Portfolio Management Discussion                                                4

Portfolio Summary                                                             10

Prices and Distributions                                                      11

Performance Update                                                            12

Comparing Ongoing Fund Expenses                                               15

Schedule of Investments                                                       17

Financial Statements                                                          25

Notes to Financial Statements                                                 32

Trustees, Officers and Service Providers                                      44


                Pioneer International Value Fund | Semiannual Report | 5/31/15 1


President's Letter

Dear Shareowner,

At mid-year, economic conditions and government policies around the world are
far from homogeneous, and we expect them to continue to diverge. In the United
States, an ongoing economic expansion has brought the unemployment rate down to
levels where wage growth is likely to accelerate. Economic growth and fiscal
austerity have dramatically reduced the Federal budget deficit, while very
accommodative Federal Reserve System policies have kept interest rates
exceptionally low. In Europe and Japan, cyclical economic recoveries/ expansions
appear to be gaining traction, buttressed by aggressive quantitative easing
policies of central banks as well as cheaper currencies. China's ongoing
transition from an infrastructure investment-driven to a consumer-driven economy
and the dramatic decline in the price of oil -- largely a result of U.S.
"fracking" -- have benefited some countries while burdening others. On balance,
though, the global economic outlook has continued to improve, although economic
and geopolitical "storm clouds" remain.

Today's market environment presents numerous opportunities as well as challenges
for investors. While we believe that the capital markets may already have priced
in some recent trends, such as the U.S. dollar's appreciation against a basket
of global currencies, it is worth noting that investment risks and opportunities
are not always aligned with the economic outlook.

Since 1928, Pioneer's investment professionals have focused on identifying and
capitalizing on the investment opportunities that present themselves in a
variety of ever-changing economic and market conditions, including those we face
today, while seeking to limit the risk of the permanent impairment of our
clients' capital. Our ongoing goal is to deliver competitive returns consistent
with our strategies' stated style and objectives and consistent with our
shareholders' expectations over a range of market conditions. We believe our
shareowners benefit from the experience and tenure of our investment teams, the
insights generated from extensive research resources, and our commitment to
prudent risk management.

2 Pioneer International Value Fund | Semiannual Report | 5/31/15


We encourage you to work with your financial advisor to develop an overall
investment plan that addresses both your short- and long-term goals, and to
implement such a plan in a disciplined manner, as we do when managing the assets
our clients have entrusted to us.

We greatly appreciate your trust in us in the past and look forward to
continuing to serve you in the future.

Sincerely,

/s/ Lisa M. Jones

President and CEO
Pioneer Investment Management USA, Inc.

Any information in this shareowner report regarding market or economic trends or
the factors influencing the Fund's historical or future performance are
statements of opinion as of the date of this report. Past performance is no
guarantee of future results.

                Pioneer International Value Fund | Semiannual Report | 5/31/15 3


Portfolio Management Discussion | 5/31/15

In the follow interview, Madelynn Matlock discusses the market environment for
international equities and the factors that influenced the performance of
Pioneer International Value Fund during the six-month period ended May 31, 2015.
Ms. Matlock, a senior vice president and a portfolio manager at Pioneer, Marco
Pirondini, Head of Equities, U.S., and a portfolio manager at Pioneer, and
Andrea Salvatori, Head of Global Emerging Markets & Latin American Equities,
Head of Emerging Market Equity Research, and a senior portfolio manager at
Pioneer based in Pioneer's London office, are responsible for the day-to-day
management of the Fund.

Q    How did the Fund perform during the six-month period ended May 31, 2015?

A    Pioneer International Value Fund's Class A shares returned 6.09% at net
     asset value during the six-month period ended May 31, 2015, while the
     Fund's benchmark, the Morgan Stanley Capital International (MSCI) Europe,
     Australasia, Far East (EAFE) ND Index1, returned 4.84%. During the same
     period, the average return of the 394 mutual funds in Lipper's
     International Multi-Cap Core Funds category was 4.98%, and the average
     return of the 798 mutual funds in Morningstar's Foreign Large Blend Funds
     category was 5.12%.

Q    How would you characterize the investment environment for international
     equities during the six-month period ended May 31, 2015?

A    International equity markets experienced considerable volatility, but still
     gained ground during the six-month period. With global economies growing at
     different rates, monetary policies of central banks showed signs of
     diverging. The U.S. economy, despite a winter weather-related setback in
     the first quarter of 2015, has been strengthening for the most part, moving
     the Federal Reserve System (the Fed) toward a tightening posture as it

(1)  The MSCI information may only be used for your internal use, may not be
     reproduced or redisseminated in any form and may not be used as a basis for
     or a component of any financial instruments or products or indices. None of
     the MSCI information is intended to constitute investment advice or a
     recommendation to make (or refrain from making) any kind of investment
     decision and may not be relied on as such. Historical data and analysis
     should not be taken as an indication or guarantee of any future performance
     analysis, forecast or prediction. The MSCI information is provided on an
     "as is" basis and the user of this information assumes the entire risk of
     any use made of this information. MSCI, each of its affiliates and each
     other person involved in or related to compiling, computing or creating any
     MSCI information (collectively, the "MSCI Parties") expressly disclaims all
     warranties (including, without limitation, any warranties of originality,
     accuracy, completeness, timeliness, non-infringement, merchantability and
     fitness for a particular purpose) with respect to this information. Without
     limiting any of the foregoing, in no event shall any MSCI Party have any
     liability for any direct, indirect, special, incidental, punitive,
     consequential (including, without limitation, lost profits) or any other
     damages.

4 Pioneer International Value Fund | Semiannual Report | 5/31/15


     contemplates the timing of its first interest-rate increase since 2006.
     Meanwhile, central banks in other countries and regions implemented
     monetary easing policies, as the rest of the world's economies were
     generally in a low-growth or decelerating mode. With bouts of geopolitical
     tensions in the Middle East, Greece's standoff with its creditors, and
     growing risk of a stock market bubble in China adding further uncertainty,
     foreign currency markets were volatile during the period, and the U.S.
     dollar rose sharply.

     Despite stagnating global growth and falling demand for oil, particularly
     in Europe, the OPEC (Organization of the Petroleum Exporting Countries)
     cartel maintained its crude oil production levels, contributing to a
     glaring supply/demand imbalance. The ensuing decline in crude oil prices
     was swift and dramatic, highlighted by crude oil's falling to as low as $46
     a barrel this past April. While the negative fallout was most severe for
     emerging markets countries dependent on oil revenue, consumers benefited
     from lower oil prices, as did oil-dependent industries such as
     transportation.

     Against that backdrop, developed-market international stocks slightly
     outperformed U.S. stocks during the six-month period (the Standard & Poor's
     500 Index returned 2.97%, while the MSCI World ND Index returned 3.38%).
     Within international equity markets, the Pacific Rim, with relatively
     strong performance from Japan, led the way, followed by Europe. Developed
     markets significantly outpaced emerging markets for the period, as the MSCI
     Emerging Markets ND Index returned just 0.82%. From a sector perspective,
     health care and information technology were the best performers during the
     six-month period, while utilities and energy - reflecting the sharp decline
     in oil prices and slowing consumer demand - turned in negative performance.

Q    What was the main reason behind the Fund's outperformance relative to its
     benchmark, the MSCI EAFE Index, during the six-month period ended May 31,
     2015?

A    Positive stock selection results made the biggest contribution to the
     Fund's outperformance of the MSCI EAFE Index during the period. Sector
     weights and regional allocations also added some incremental returns to
     relative performance.

     Our research-driven investment approach is rooted in evaluating and
     choosing stocks that we believe have good return potential, with the goal
     of not overpaying for that potential. We evaluate every company's return on

                Pioneer International Value Fund | Semiannual Report | 5/31/15 5


     invested capital versus what the company must pay for that capital, and we
     favor companies that are either adding value on a consistent basis or that
     have the potential to improve their returns over time. We also try to take
     advantage of long-running secular trends that may lead to higher returns in
     the future, and we avoid what we consider negative trends that might drag
     on companies' performance, even if they are well managed.

     With regard to individual stocks, positive benchmark-relative returns for
     the six-month period derived largely from the Fund's positions in less
     well-known, more mid-sized companies. Examples of portfolio holdings in
     mid-sized companies that contributed to the Fund's relative performance
     include Murata, Persimmon, Pax Global, and Sundrug.

Q    What other investment strategies contributed to the Fund's positive results
     during the six-month period ended May 31, 2015?

A    The Fund benefitted from a greater-than-benchmark weighting in Japan, as
     that country's market turned in strong performance during the period. We
     have been encouraged by Japan's aggressive monetary policies and
     shareholder-friendly market reforms, which are helping to support equity
     prices there. In fact, two of the Fund's best-performing stocks during the
     period were domiciled in Japan, the aforementioned Murata and Sundrug.
     Murata, a manufacturer of electronics used to enable wireless
     communications for Smartphones and other products, was a beneficiary of the
     growth in global Smartphone usage. Murata's stock price also rose on news
     of the company's decision to expand its reach into the so-called "Internet
     of Things" -- connecting thermostats, appliances, etc., to computers and
     Smartphones. The Fund's shares of Sundrug, a drug store chain, also
     performed well during the period. With the regulatory environment for
     dispensing drugs beginning to ease in Japan and the one-time shock of the
     increase in the country's value-added tax waning, the company's stock
     rallied. As regulations gradually ease, we believe Sundrug is in a good
     position to benefit from its retail network capabilities.

     With regard to sector weights, our decision to overweight the portfolio in
     technology and to underweight energy and materials aided benchmark-
     relative returns. Within materials, however, we focused on stocks of
     companies that we thought would perform well in an environment of weak
     commodity prices. Shares of Incitec Pivot, the Australian distributor of
     fertilizers, and Syngenta, the Swiss agricultural company, exemplified our
     strategy as both turned in solid performance. Syngenta's stock also rallied
     on the announcement of an offer by Monsanto to purchase the company.

6 Pioneer International Value Fund | Semiannual Report | 5/31/15



Q    Which of your investment strategies detracted the most from the Fund's
     performance during the six-month period ended May 31, 2015?

A    Energy stocks were among the worst performers, overall, during the
     six-month period. The unexpectedly sharp decline in oil prices and OPEC's
     decision not to lend support to prices by cutting production created a
     ripple effect throughout the global economy. The impact has been felt most
     profoundly among oil-exploration and oil-production companies, which have
     reduced capital spending in the wake of the supply/demand imbalance. While
     we maintained the portfolio's lower-than-benchmark weighting in energy
     during the period, the steep decline in the value of most energy stocks
     weighed on the Fund's performance. In addition to the effects of falling
     oil revenues, the Fund's position in Encana, the Canadian energy giant,
     also suffered as a result of management's ill-timed offer to buy an oil
     producer in the Texas shale area.

     Two other Fund holdings tied to the commodity market detracted from
     performance during the six-month period: Komatsu and GDF Suez. Komatsu, a
     Japanese manufacturer of construction machinery and vehicles, struggled in
     response to a deteriorating outlook for the construction and mining
     industries. France's largest utility, GDF Suez, fell prey to falling oil
     and gas prices. Even with the company's increasing focus on renewable
     energies and efficiency services which rely on digital technologies, GDF's
     fundamental outlook appears challenged, in our estimation. Both Komatsu and
     GDF were sold from the portfolio before the end of the period.

     Finally, although the weaker euro and yen relative to the U.S. dollar
     provided tailwinds for companies in the Fund's portfolio that export to, or
     have operations in, the United States, the decline in value of those
     companies' home currencies weighed on their stock prices when the
     currencies were translated back to U.S. dollars. Currency volatility was
     pronounced during the six-month period, making earnings and profits harder
     to forecast for multinational companies such as Danone in France, and
     Yaskawa in Japan, two portfolio holdings which detracted from the Fund's
     performance.

                Pioneer International Value Fund | Semiannual Report | 5/31/15 7


Q    Did the Fund have any derivative exposure during the six-month period ended
     May 31, 2015, and did the exposure have an effect on performance?

A    Yes. We used derivatives in the portfolio, including futures, forward
     foreign currency contracts and total return swaps, the latter of which we
     employed in an attempt to hedge the difference in the performance of
     Japan's Nikkei 400 Index, which was introduced in 2014, and the TOPIX
     (Tokyo Stock Price Index) Index. The hedge, which favored the relative
     outperformance of the Nikkei 400, was slightly accretive for the Fund's
     performance during the period.

Q    What is your outlook for international stocks for the remainder of 2015?

A    While we are optimistic about the investment environment for international
     equities in the intermediate and longer terms, we believe growth in the
     developed markets is likely to be uneven. Our near-term outlook is guarded,
     as global growth concerns combined with a stronger U.S. dollar are having
     an effect on corporate fundamentals, and the international equity markets
     in general.

     We are encouraged by the pro-growth policies emanating from the European
     Central Bank and the Bank of Japan, which are designed to help stimulate
     the respective economies of the euro zone and Japan. But the difficult,
     long-term reforms that are needed for many markets in Europe and Japan to
     become more competitive are only in their infancy. Thus, while we are
     confident that Europe offers long-term growth potential, our near-term
     outlook for the region is more guarded in light of a challenging corporate
     earnings picture. Even so, while the outcome of the Greek debt crisis was
     still in question at the end of the reporting period, the risk of the
     European Union's breaking up has, in our view, diminished greatly over the
     past several years.

     In Japan, we remain encouraged by improvements in corporate governance and
     efforts directed at improving returns for shareholders. In the emerging
     markets, we continue to see weakness in Latin America, offset by pockets of
     strength in Asia.

     With such a complex backdrop, we will continue to rely on our research-
     driven investment process when choosing investments for the Fund, focusing
     on companies with reasonable stock valuations, solid growth, profitability,
     and a presence in markets where we see secular growth potential.

8 Pioneer International Value Fund | Semiannual Report | 5/31/15


Please refer to the Schedule of Investments on pages 17-24 for a full listing of
Fund securities.

Investing in foreign and/or emerging markets securities involves risks relating
to interest rates, currency exchange rates, economic, and political conditions.

The Fund may invest a substantial amount of its assets in issuers located within
a specific region, and is, therefore, more susceptible to adverse developments
affecting those regions.

When interest rates rise, the prices of fixed-income securities in the Fund will
generally fall. Conversely, when interest rates fall, the prices of fixed-income
securities in the Fund will generally rise.

At times, the Fund's investments may represent industries or industry sectors
that are interrelated or have common risks, making it more susceptible to any
economic, political, or regulatory developments or other risks affecting those
industries or sectors.

These risks may increase share price volatility.

Before investing, consider the product's investment objectives, risks, charges
and expenses. Contact your advisor or Pioneer Investments for a prospectus or
summary prospectus containing this information. Read it carefully.

Any information in this shareholder report regarding market or economic trends
or the factors influencing the Fund's historical or future performance are
statements of opinion as of the date of this report. Past performance is no
guarantee of future results.

                Pioneer International Value Fund | Semiannual Report | 5/31/15 9


Portfolio Summary | 5/31/15

Sector Distribution
--------------------------------------------------------------------------------
(As a percentage of total long-term holdings)

[THE FOLLOWING DATA WAS REPRESENTED AS A PIE CHART IN THE PRINTED MATERIAL]



                                                                          
Financials                                                                 24.0%
Industrials                                                                13.1%
Health Care                                                                13.0%
Consumer Staples                                                           10.9%
Consumer Discretionary                                                     10.4%
Materials                                                                   9.0%
Information Technology                                                      7.7%
Telecommunication Services                                                  4.9%
Energy                                                                      3.8%
Utilities                                                                   3.2%
 

Geographical Distribution
--------------------------------------------------------------------------------
(As a percentage of total long-term holdings)



                                                                          
Japan                                                                      30.6%
United Kingdom                                                             11.1%
Switzerland                                                                11.0%
Germany                                                                    10.6%
France                                                                      7.4%
Australia                                                                   5.6%
Spain                                                                       4.7%
Netherlands                                                                 4.1%
Ireland                                                                     3.3%
Sweden                                                                      2.8%
Jersey Channel Islands                                                      2.6%
Canada                                                                      2.3%
Curacao                                                                     1.2%
Bermuda                                                                     1.0%
Other (individually less than 1%)                                           1.7%


10 Largest Holdings
--------------------------------------------------------------------------------
(As a percentage of total long-term holdings)*



                                                                         
 1.   Shire Plc                                                            2.57%
--------------------------------------------------------------------------------
 2.   Novartis AG                                                          2.36
--------------------------------------------------------------------------------
 3.   Syngenta AG                                                          2.21
--------------------------------------------------------------------------------
 4.   Fresenius SE & Co. KGaA                                              1.99
--------------------------------------------------------------------------------
 5.   Zurich Insurance Group AG                                            1.93
--------------------------------------------------------------------------------
 6.   Roche Holding AG                                                     1.76
--------------------------------------------------------------------------------
 7.   Gerresheimer AG                                                      1.76
--------------------------------------------------------------------------------
 8.   Vodafone Group Plc                                                   1.74
--------------------------------------------------------------------------------
 9.   Sundrug Co., Ltd.                                                    1.74
--------------------------------------------------------------------------------
10.   UBS Group AG                                                         1.71
--------------------------------------------------------------------------------


*    This list excludes temporary cash investments and derivative instruments.
     The portfolio is actively managed, and current holdings may be different.
     The holdings listed should not be considered recommendations to buy or sell
     any security listed.

10 Pioneer International Value Fund | Semiannual Report | 5/31/15


Prices and Distributions | 5/31/15

Net Asset Value per Share
--------------------------------------------------------------------------------



--------------------------------------------------------------------------------
         Class                      5/31/15                           11/30/14
--------------------------------------------------------------------------------
                                                                 
           A                        $22.38                             $22.34
--------------------------------------------------------------------------------
           C                        $19.65                             $19.69
--------------------------------------------------------------------------------
           Y                        $22.41                             $22.41
--------------------------------------------------------------------------------


Distributions per Share: 12/1/14-5/31/15
--------------------------------------------------------------------------------



                                           Short-Term           Long-Term
         Class          Dividends         Capital Gains        Capital Gains
                                                         
           A            $1.2250               $   --              $      --
--------------------------------------------------------------------------------
           C            $1.0635               $   --              $      --
--------------------------------------------------------------------------------
           Y            $1.3086               $   --              $      --
--------------------------------------------------------------------------------


Index Definition
--------------------------------------------------------------------------------
The MSCI EAFE ND Index is an unmanaged, commonly used measure of international
stocks. Index returns are calculated monthly, assume reinvestment of dividends
and, unlike Fund returns, do not reflect any fees, expenses or sales charges. It
is not possible to invest directly in an index.

The index defined here pertains to the "Value of $10,000 Investment" and "Value
of $5 Million Investment" charts on pages 12-14.

               Pioneer International Value Fund | Semiannual Report | 5/31/15 11


Performance Update | 5/31/15                                      Class A Shares

Investment Returns
--------------------------------------------------------------------------------
The mountain chart on the right shows the change in value of a $10,000
investment made in Class A shares of Pioneer International Value Fund at public
offering price during the periods shown, compared to that of the Morgan Stanley
Capital International (MSCI) Europe, Australasia and Far East (EAFE) ND Index.



Average Annual Total Returns
(As of May 31, 2015)
--------------------------------------------------------------------------------
             Net          Public      MSCI
             Asset        Offering    EAFE
             Value        Price       ND
Period       (NAV)        (POP)       Index
--------------------------------------------------------------------------------
                             
10 Years     4.55%         3.93%       5.56%
--------------------------------------------------------------------------------
5 Years      8.64          7.36        9.90
--------------------------------------------------------------------------------
1 Year       3.04         -2.87       -0.48
--------------------------------------------------------------------------------


Expense Ratio
(Per prospectus dated April 1, 2015)
--------------------------------------------------------------------------------
                  Gross        Net
--------------------------------------------------------------------------------
                        
                  1.70%        1.45%
--------------------------------------------------------------------------------


[THE FOLLOWING DATA WAS REPRESENTED AS A MOUNTAIN CHART IN THE PRINTED MATERIAL]

Value of $10,000 Investment



                            Pioneer International
                            Value Fund                    MSCI EAFE ND Index
                                                    
5/31/2005                   $ 9,425                       $10,000
5/31/2006                   $12,336                       $12,824
5/31/2007                   $15,480                       $16,266
5/31/2008                   $14,985                       $15,855
5/31/2009                   $ 9,590                       $10,051
5/31/2010                   $ 9,718                       $10,715
5/31/2011                   $12,388                       $13,973
5/31/2012                   $ 9,779                       $11,111
5/31/2013                   $12,525                       $14,624
5/31/2014                   $14,275                       $17,263
5/31/2015                   $14,710                       $17,180


Call 1-800-225-6292 or visit us.pioneerinvestments.com for the most recent
month-end performance results. Current performance may be lower or higher than
the performance data quoted.

The performance data quoted represents past performance, which is no guarantee
of future results. Investment return and principal value will fluctuate, and
shares, when redeemed, may be worth more or less than their original cost.

NAV results represent the percent change in net asset value per share. Returns
would have been lower had sales charges been reflected. POP returns reflect
deduction of maximum 5.75% sales charge. All results are historical and assume
the reinvestment of dividends and capital gains. Other share classes are
available for which performance and expenses will differ.

Performance results reflect any applicable expense waivers in effect during the
periods shown. Without such waivers Fund performance would be lower. Waivers may
not be in effect for all funds. Certain fee waivers are contractual through a
specified period. Otherwise, fee waivers can be rescinded at any time. See the
prospectus and financial statements for more information.

The net expense ratio reflects the contractual expense limitation currently in
effect through April 1, 2016, for Class A shares. There can be no assurance that
Pioneer will extend the expense limitation beyond such time. Please see the
prospectus and financial statements for more information.

The performance table and graph do not reflect the deduction of fees and taxes
that a shareowner would pay on Fund distributions or the redemption of Fund
shares.

12 Pioneer International Value Fund | Semiannual Report | 5/31/15


Performance Update | 5/31/15                                      Class C Shares

Investment Returns
--------------------------------------------------------------------------------
The mountain chart on the right shows the change in value of a $10,000
investment made in Class C shares of Pioneer International Value Fund during the
periods shown, compared to that of the Morgan Stanley Capital International
(MSCI) Europe, Australasia and Far East (EAFE) ND Index.



Average Annual Total Returns
(As of May 31, 2015)
--------------------------------------------------------------------------------
                                             MSCI
                                             EAFE
               If             If             ND
Period         Held           Redeemed       Index
--------------------------------------------------------------------------------
10 Years       3.65%          3.65%          5.56%
--------------------------------------------------------------------------------
5 Years        7.67           7.67           9.90
--------------------------------------------------------------------------------
1 Year         2.12           2.12           -0.48
--------------------------------------------------------------------------------


Expense Ratio
(Per prospectus dated April 1, 2015)
--------------------------------------------------------------------------------
                    Gross       Net
--------------------------------------------------------------------------------
                          
                    2.44%       2.35%
--------------------------------------------------------------------------------


[THE FOLLOWING DATA WAS REPRESENTED AS A MOUNTAIN CHART IN THE PRINTED MATERIAL]

Value of $10,000 Investment



                            Pioneer International
                            Value Fund                    MSCI EAFE ND Index
                                                    
5/31/2005                   $10,000                       $10,000
5/31/2006                   $12,983                       $12,824
5/31/2007                   $16,185                       $16,266
5/31/2008                   $15,542                       $15,855
5/31/2009                   $9,849                        $10,051
5/31/2010                   $9,889                        $10,715
5/31/2011                   $12,495                       $13,973
5/31/2012                   $9,777                        $11,111
5/31/2013                   $12,411                       $14,624
5/31/2014                   $14,015                       $17,263
5/31/2015                   $14,312                       $17,180


Call 1-800-225-6292 or visit us.pioneerinvestments.com for the most recent
month-end performance results. Current performance may be lower or higher than
the performance data quoted.

The performance data quoted represents past performance, which is no guarantee
of future results. Investment return and principal value will fluctuate, and
shares, when redeemed, may be worth more or less than their original cost.

Class C shares held for less than one year are also subject to a 1% contingent
deferred sales charge (CDSC). "If Held" results represent the percent change in
net asset value per share. Returns would have been lower had sales charges been
reflected. All results are historical and assume the reinvestment of dividends
and capital gains. Other share classes are available for which performance and
expenses will differ.

Performance results reflect any applicable expense waivers in effect during the
periods shown. Without such waivers Fund performance would be lower. Waivers may
not be in effect for all funds. Certain fee waivers are contractual through a
specified period. Otherwise, fee waivers can be rescinded at any time. See the
prospectus and financial statements for more information.

The net expense ratio reflects the contractual expense limitation currently in
effect through April 1, 2016, for Class C shares. There can be no assurance that
Pioneer will extend the expense limitation beyond such time. Please see the
prospectus and financial statements for more information.

The performance table and graph do not reflect the deduction of fees and taxes
that a shareowner would pay on Fund distributions or the redemption of Fund
shares.

               Pioneer International Value Fund | Semiannual Report | 5/31/15 13


Performance Update | 5/31/15                                      Class Y Shares

Investment Returns
--------------------------------------------------------------------------------
The mountain chart on the right shows the change in value of a $5 million
investment made in Class Y shares of Pioneer International Value Fund during the
periods shown, compared to that of the Morgan Stanley Capital International
(MSCI) Europe, Australasia and Far East (EAFE) ND Index.



Average Annual Total Returns
(As of May 31, 2015)
--------------------------------------------------------------------------------
                  Net          MSCI
                  Asset        EAFE
                  Value        ND
Period            (NAV)        Index
--------------------------------------------------------------------------------
                        
10 Years          4.83%        5.56%
--------------------------------------------------------------------------------
5 Years           9.10         9.90
--------------------------------------------------------------------------------
1 Year            3.44        -0.48
--------------------------------------------------------------------------------


Expense Ratio
(Per prospectus dated April 1, 2015)
--------------------------------------------------------------------------------
                      Gross
--------------------------------------------------------------------------------
                   
                      1.06%
--------------------------------------------------------------------------------





[THE FOLLOWING DATA WAS REPRESENTED AS A MOUNTAIN CHART IN THE PRINTED MATERIAL]

Value of $5 Million Investment

                            Pioneer International
                            Value Fund                    MSCI EAFE ND Index
                                                    
5/31/2005                   $5,000,000                    $5,000,000
5/31/2006                   $6,545,902                    $6,412,160
5/31/2007                   $8,214,117                    $8,133,246
5/31/2008                   $7,951,309                    $7,927,325
5/31/2009                   $5,095,104                    $5,025,274
5/31/2010                   $5,182,762                    $5,357,605
5/31/2011                   $6,640,097                    $6,986,695
5/31/2012                   $5,262,478                    $5,555,503
5/31/2013                   $6,767,709                    $7,312,001
5/31/2014                   $7,745,502                    $8,631,309
5/31/2015                   $8,011,617                    $8,589,856


Call 1-800-225-6292 or visit us.pioneerinvestments.com for the most recent
month-end performance results. Current performance may be lower or higher than
the performance data quoted. The performance data quoted represents past
performance, which is no guarantee of future results.

Investment return and principal value will fluctuate, and shares, when redeemed,
may be worth more or less than their original cost.

Class Y shares were first publicly offered on April 16, 2009. Performance shown
for periods prior to the inception of Class Y shares on April 16, 2009, reflects
the NAV performance of the Fund's Class A shares. The performance does not
reflect differences in expenses, including the Rule 12b-1 fees applicable to
Class A shares. Since fees for Class A shares are generally higher than those of
Class Y shares, the performance for Class Y shares prior to their inception
would have been higher than the performance shown. For the period beginning
April 16, 2009, the actual performance of Class Y shares is reflected. Class Y
shares are not subject to sales charges and are available for limited groups of
eligible investors, including institutional investors. All results are
historical and assume the reinvestment of dividends and capital gains. Other
share classes are available for which performance and expenses will differ.

Performance results reflect any applicable expense waivers in effect during the
periods shown. Without such waivers Fund performance would be lower. Waivers may
not be in effect for all funds. Certain fee waivers are contractual through a
specified period. Otherwise, fee waivers can be rescinded at any time. See the
prospectus and financial statements for more information.

The performance table and graph do not reflect the deduction of fees and taxes
that a shareowner would pay on Fund distributions or the redemption of Fund
shares.

14 Pioneer International Value Fund | Semiannual Report | 5/31/15


Comparing Ongoing Fund Expenses

As a shareowner in the Fund, you incur two types of costs:

(1)  ongoing costs, including management fees, distribution and/or service
     (12b-1) fees, and other Fund expenses; and

(2)  transaction costs, including sales charges (loads) on purchase payments.

This example is intended to help you understand your ongoing expenses (in
dollars) of investing in the Fund and to compare these costs with the ongoing
costs of investing in other mutual funds. The example is based on an investment
of $1,000 at the beginning of the Fund's latest six-month period and held
throughout the six months.

Using the Tables
--------------------------------------------------------------------------------
Actual Expenses

The first table below provides information about actual account values and
actual expenses. You may use the information in this table, together with the
amount you invested, to estimate the expenses that you paid over the period as
follows:

(1)  Divide your account value by $1,000
     Example: an $8,600 account value (divided by) $1,000 = 8.6

(2)  Multiply the result in (1) above by the corresponding share class's number
     in the third row under the heading entitled "Expenses Paid During Period"
     to estimate the expenses you paid on your account during this period.

Expenses Paid on a $1,000 Investment in Pioneer International Value Fund

Based on actual returns from December 1, 2014 through May 31, 2015.



--------------------------------------------------------------------------------
Share Class                           A                C                   Y
--------------------------------------------------------------------------------
                                                              
Beginning Account                 $1,000.00        $1,000.00           $1,000.00
Value on 12/1/14
--------------------------------------------------------------------------------
Ending Account                    $1,060.90        $1,055.90           $1,063.00
Value (after expenses)
on 5/31/15
--------------------------------------------------------------------------------
Expenses Paid                     $    7.45        $   12.05           $    5.14
During Period*
--------------------------------------------------------------------------------


*    Expenses are equal to the Fund's annualized expense ratio of 1.45%, 2.35%,
     and 1.00%, multiplied by the average account value over the period,
     multiplied by 182/365 (to reflect the one-half year period).

               Pioneer International Value Fund | Semiannual Report | 5/31/15 15


Hypothetical Example for Comparison Purposes

The table below provides information about hypothetical account values and
hypothetical expenses based on the Fund's actual expense ratio and an assumed
rate of return of 5% per year before expenses, which is not the Fund's actual
return. The hypothetical account values and expenses may not be used to estimate
the actual ending account balance or expenses you paid for the period.

You may use this information to compare the ongoing costs of investing in the
Fund and other funds. To do so, compare this 5% hypothetical example with the 5%
hypothetical examples that appear in the shareholder reports of the other funds.

Please note that the expenses shown in the tables are meant to highlight your
ongoing costs only and do not reflect any transaction costs, such as sales
charges (loads), or redemption fees that are charged at the time of the
transaction. Therefore, the table below is useful in comparing ongoing costs
only and will not help you determine the relative total costs of owning
different funds. In addition, if these transaction costs were included, your
costs would have been higher.

Expenses Paid on a $1,000 Investment in Pioneer International Value Fund

Based on a hypothetical 5% return per year before expenses, reflecting the
period from December 1, 2014 through May 31, 2015.



--------------------------------------------------------------------------------
Share Class                            A               C                    Y
--------------------------------------------------------------------------------
                                                              
Beginning Account                 $1,000.00        $1,000.00           $1,000.00
Value on 12/1/14
--------------------------------------------------------------------------------
Ending Account                    $1,017.70        $1,013.21           $1,019.95
Value (after expenses)
on 5/31/15
--------------------------------------------------------------------------------
Expenses Paid                     $    7.29        $   11.80           $    5.04
During Period*
--------------------------------------------------------------------------------


*    Expenses are equal to the Fund's annualized expense ratio of 1.45%, 2.35%,
     and 1.00%, multiplied by the average account value over the period,
     multiplied by 182/365 (to reflect the one-half year period).

16 Pioneer International Value Fund | Semiannual Report | 5/31/15


Schedule of Investments | 5/31/15 (unaudited)



----------------------------------------------------------------------------------------------
Shares                                                                          Value
----------------------------------------------------------------------------------------------
                                                                          
                      COMMON STOCKS -- 96.4%
                      ENERGY -- 3.7%
                      Oil & Gas Equipment & Services -- 1.2%
           26,200     Schlumberger, Ltd.                                        $    2,378,174
----------------------------------------------------------------------------------------------
                      Integrated Oil & Gas -- 1.0%
          113,000     BG Group Plc                                              $    1,965,349
----------------------------------------------------------------------------------------------
                      Oil & Gas Exploration & Production -- 1.5%
          230,000     Encana Corp.                                              $    2,913,826
                                                                                --------------
                      Total Energy                                              $    7,257,349
----------------------------------------------------------------------------------------------
                      MATERIALS -- 8.7%
                      Commodity Chemicals -- 2.3%
          232,400     Kuraray Co., Ltd.                                         $    3,044,695
           27,100     Methanex Corp.                                                 1,503,571
                                                                                --------------
                                                                                $    4,548,266
----------------------------------------------------------------------------------------------
                      Diversified Chemicals -- 1.4%
          928,800     Incitec Pivot, Ltd.                                       $    2,821,101
----------------------------------------------------------------------------------------------
                      Fertilizers & Agricultural Chemicals -- 2.1%
            9,200     Syngenta AG                                               $    4,214,142
----------------------------------------------------------------------------------------------
                      Specialty Chemicals -- 1.6%
           69,200     Croda International Plc                                   $    3,096,824
----------------------------------------------------------------------------------------------
                      Paper Packaging -- 1.3%
          223,600     Amcor, Ltd.                                               $    2,470,326
                                                                                --------------
                      Total Materials                                           $   17,150,659
----------------------------------------------------------------------------------------------
                      CAPITAL GOODS -- 12.7%
                      Agricultural & Farm Machinery -- 1.0%
          121,000     Kubota Corp.                                              $    2,009,079
----------------------------------------------------------------------------------------------
                      Building Products -- 2.8%
           35,400     Daikin Industries, Ltd.                                   $    2,705,208
          165,000     TOTO, Ltd.                                                     2,721,438
                                                                                --------------
                                                                                $    5,426,646
----------------------------------------------------------------------------------------------
                      Electrical Components & Equipment -- 1.6%
           41,200     Schneider Electric SE                                     $    3,125,330
----------------------------------------------------------------------------------------------
                      Heavy Electrical Equipment -- 1.4%
          203,000     Mitsubishi Electric Corp.                                 $    2,771,950
----------------------------------------------------------------------------------------------
                      Industrial Conglomerates -- 2.9%
          102,000     Koninklijke Philips NV                                    $    2,780,405
           27,900     Siemens AG                                                     2,935,725
                                                                                --------------
                                                                                $    5,716,130
----------------------------------------------------------------------------------------------


The accompanying notes are an integral part of these financial statements.

               Pioneer International Value Fund | Semiannual Report | 5/31/15 17


Schedule of Investments | 5/31/15 (unaudited) (continued)




----------------------------------------------------------------------------------------------
Shares                                                                          Value
----------------------------------------------------------------------------------------------
                                                                          
                      Industrial Machinery -- 3.0%
          133,400     Fujitec Co., Ltd.                                         $    1,551,755
           52,000     GEA Group AG                                                   2,528,758
           72,500     Nabtesco Corp.                                                 1,863,792
                                                                                --------------
                                                                                $    5,944,305
                                                                                --------------
                      Total Capital Goods                                       $   24,993,440
----------------------------------------------------------------------------------------------
                      AUTOMOBILES & COMPONENTS -- 2.1%
                      Tires & Rubber -- 1.2%
           60,100     Bridgestone Corp.                                         $    2,496,076
----------------------------------------------------------------------------------------------
                      Automobile Manufacturers -- 0.9%
           18,400     Daimler AG                                                $    1,724,090
                                                                                --------------
                      Total Automobiles & Components                            $    4,220,166
----------------------------------------------------------------------------------------------
                      CONSUMER DURABLES & APPAREL -- 4.5%
                      Consumer Electronics -- 1.0%
          137,900     Panasonic Corp.                                           $    2,022,833
----------------------------------------------------------------------------------------------
                      Homebuilding -- 3.1%
          102,900     Persimmon Plc                                             $    3,092,657
          227,200     Sekisui Chemical Co., Ltd.                                     3,060,558
                                                                                --------------
                                                                                $    6,153,215
----------------------------------------------------------------------------------------------
                      Textiles -- 0.4%
          566,000     Pacific Textiles Holdings, Ltd.                           $      792,494
                                                                                --------------
                      Total Consumer Durables & Apparel                         $    8,968,542
----------------------------------------------------------------------------------------------
                      CONSUMER SERVICES -- 1.3%
                      Restaurants -- 1.3%
          206,700     Domino's Pizza Group Plc                                  $    2,517,935
                                                                                --------------
                      Total Consumer Services                                   $    2,517,935
----------------------------------------------------------------------------------------------
                      MEDIA -- 0.9%
                      Advertising -- 0.9%
           23,200     Publicis Groupe SA                                        $    1,863,284
                                                                                --------------
                      Total Media                                               $    1,863,284
----------------------------------------------------------------------------------------------
                      RETAILING -- 1.2%
                      Apparel Retail -- 1.2%
           61,100     Hennes & Mauritz AB                                       $    2,409,294
                                                                                --------------
                      Total Retailing                                           $    2,409,294
----------------------------------------------------------------------------------------------
                      FOOD & STAPLES RETAILING -- 2.7%
                      Drug Retail -- 1.7%
           62,800     Sundrug Co., Ltd.                                         $    3,309,933
----------------------------------------------------------------------------------------------
                      Hypermarkets & Super Centers -- 1.0%
          259,900     Distribuidora Internacional de Alimentacion SA            $    2,072,189
                                                                                --------------
                      Total Food & Staples Retailing                            $    5,382,122
----------------------------------------------------------------------------------------------


The accompanying notes are an integral part of these financial statements.

18 Pioneer International Value Fund | Semiannual Report | 5/31/15




----------------------------------------------------------------------------------------------
Shares                                                                          Value
----------------------------------------------------------------------------------------------
                                                                          
                      FOOD, BEVERAGE & TOBACCO -- 5.2%
                      Soft Drinks -- 1.0%
           46,000     Suntory Beverage & Food, Ltd.*                            $    1,917,865
----------------------------------------------------------------------------------------------
                      Packaged Foods & Meats -- 4.2%
           39,100     Danone SA                                                 $    2,686,705
           43,400     Kerry Group Plc                                                3,238,080
           54,900     Unilever NV                                                    2,342,773
                                                                                --------------
                                                                                $    8,267,558
                                                                                --------------
                      Total Food, Beverage & Tobacco                            $   10,185,423
----------------------------------------------------------------------------------------------
                      HOUSEHOLD & PERSONAL PRODUCTS -- 2.6%
                      Household Products -- 2.6%
           31,300     Henkel AG & Co. KGaA                                      $    3,215,420
           90,800     Unicharm Corp.                                                 2,001,413
                                                                                --------------
                                                                                $    5,216,833
                                                                                --------------
                      Total Household & Personal Products                       $    5,216,833
----------------------------------------------------------------------------------------------
                      HEALTH CARE EQUIPMENT & SERVICES -- 3.2%
                      Health Care Supplies -- 1.3%
           67,600     Hoya Corp.                                                $    2,486,065
----------------------------------------------------------------------------------------------
                      Health Care Services -- 1.9%
           59,400     Fresenius SE & Co. KGaA                                   $    3,787,198
                                                                                --------------
                      Total Health Care Equipment & Services                    $    6,273,263
----------------------------------------------------------------------------------------------
                      PHARMACEUTICALS, BIOTECHNOLOGY &
                      LIFE SCIENCES -- 9.4%
                      Pharmaceuticals -- 7.7%
          168,900     Astellas Pharma, Inc.                                     $    2,452,468
           43,700     Novartis AG                                                    4,498,116
           11,406     Roche Holding AG                                               3,358,792
           56,500     Shire Plc                                                      4,893,110
                                                                                --------------
                                                                                $   15,202,486
----------------------------------------------------------------------------------------------
                      Life Sciences Tools & Services -- 1.7%
           58,800     Gerresheimer AG                                           $    3,355,295
                                                                                --------------
                      Total Pharmaceuticals, Biotechnology & Life Sciences      $   18,557,781
----------------------------------------------------------------------------------------------
                      BANKS -- 8.8%
                      Diversified Banks -- 8.8%
          292,223     Banco Bilbao Vizcaya Argentaria SA                        $    2,886,826
          761,500     Barclays Plc                                                   3,144,469
           52,200     BNP Paribas SA                                                 3,162,685
           96,000     National Australia Bank, Ltd.                                  2,508,311
           59,000     Sumitomo Mitsui Financial Group, Inc.                          2,673,362
          123,700     Swedbank AB                                                    2,903,558
                                                                                --------------
                                                                                $   17,279,211
                                                                                --------------
                      Total Banks                                               $   17,279,211
----------------------------------------------------------------------------------------------


The accompanying notes are an integral part of these financial statements.

              Pioneer International Value Fund | Semiannual Report | 5/31/15 19


Schedule of Investments | 5/31/15 (unaudited) (continued)



----------------------------------------------------------------------------------------------
Shares                                                                          Value
----------------------------------------------------------------------------------------------
                                                                          
                      DIVERSIFIED FINANCIALS -- 1.6%
                      Diversified Capital Markets -- 1.6%
          151,300     UBS Group AG                                              $    3,255,722
                                                                                --------------
                      Total Diversified Financials                              $    3,255,722
----------------------------------------------------------------------------------------------
                      INSURANCE -- 5.7%
                      Insurance Brokers -- 1.2%
           24,200     Aon Plc*                                                  $    2,449,524
----------------------------------------------------------------------------------------------
                      Multi-line Insurance -- 3.5%
          127,300     AXA SA                                                    $    3,217,378
           11,500     Zurich Insurance Group AG                                      3,674,723
                                                                                --------------
                                                                                $    6,892,101
----------------------------------------------------------------------------------------------
                      Property & Casualty Insurance -- 1.0%
           18,400     ACE, Ltd.                                                 $    1,959,232
                                                                                --------------
                      Total Insurance                                           $   11,300,857
----------------------------------------------------------------------------------------------
                      REAL ESTATE -- 7.0%
                      Diversified REIT -- 2.9%
        1,665,215     Hibernia Real Estate Investment Trust plc                 $    2,377,949
          507,700     Hibernia Real Estate Investment Trust plc*                       716,090
           44,172     Wereldhave NV                                                  2,674,664
                                                                                --------------
                                                                                $    5,768,703
----------------------------------------------------------------------------------------------
                      Industrial REIT -- 1.4%
          560,600     Goodman Group                                             $    2,794,884
----------------------------------------------------------------------------------------------
                      Diversified Real Estate Activities -- 1.4%
           91,000     Mitsui Fudosan Co., Ltd.                                  $    2,644,992
----------------------------------------------------------------------------------------------
                      Real Estate Operating Companies -- 1.3%
           83,385     Deutsche Annington Immobilien SE*                         $    2,640,949
                                                                                --------------
                      Total Real Estate                                         $   13,849,528
----------------------------------------------------------------------------------------------
                      TECHNOLOGY HARDWARE & EQUIPMENT -- 6.7%
                      Electronic Equipment Manufacturers -- 2.7%
          371,100     Hitachi, Ltd.                                             $    2,532,243
        1,086,000     PAX Global Technology, Ltd.*                                   1,963,770
          512,000     Wasion Group Holdings, Ltd.                                      791,361
                                                                                --------------
                                                                                $    5,287,374
----------------------------------------------------------------------------------------------
                      Electronic Components -- 4.0%
           78,700     Alps Electric Co., Ltd.                                   $    2,008,009
           18,000     Murata Manufacturing Co., Ltd.                                 2,921,504
          210,600     Yaskawa Electric Corp.                                         2,947,111
                                                                                --------------
                                                                                $    7,876,624
                                                                                --------------
                      Total Technology Hardware & Equipment                     $   13,163,998
----------------------------------------------------------------------------------------------


The accompanying notes are an integral part of these financial statements.

20 Pioneer International Value Fund | Semiannual Report | 5/31/15





----------------------------------------------------------------------------------------------
Shares                                                                          Value
----------------------------------------------------------------------------------------------
                                                                          
                      SEMICONDUCTORS & SEMICONDUCTOR EQUIPMENT -- 0.8%
                      Semiconductors -- 0.8%
           33,700     SK Hynix, Inc.                                            $    1,535,828
                                                                                --------------
                      Total Semiconductors & Semiconductor Equipment            $    1,535,828
----------------------------------------------------------------------------------------------
                      TELECOMMUNICATION SERVICES -- 4.8%
                      Integrated Telecommunication Services -- 1.0%
           28,500     Nippon Telegraph & Telephone Corp.                        $    1,981,543
----------------------------------------------------------------------------------------------
                      Wireless Telecommunication Services -- 3.8%
          114,000     KDDI Corp.                                                $    2,561,426
           27,700     SoftBank Corp.                                                 1,654,514
          848,118     Vodafone Group Plc                                             3,318,437
                                                                                --------------
                                                                                $    7,534,377
                                                                                --------------
                      Total Telecommunication Services                          $    9,515,920
----------------------------------------------------------------------------------------------
                      UTILITIES -- 2.8%
                      Electric Utilities -- 1.7%
           22,800     Red Electrica Corp SA                                     $    1,918,712
           57,300     SSE Plc                                                        1,461,512
                                                                                --------------
                                                                                $    3,380,224
----------------------------------------------------------------------------------------------
                      Gas Utilities -- 1.1%
           84,300     Gas Natural SDG SA                                        $    2,074,560
                                                                                --------------
                      Total Utilities                                           $    5,454,784
----------------------------------------------------------------------------------------------
                      TOTAL COMMON STOCKS
                      (Cost $169,843,911)                                       $  190,351,939
----------------------------------------------------------------------------------------------
                      TOTAL INVESTMENT IN SECURITIES -- 96.4%
                      (Cost $169,843,911) (a) (b)                               $  190,351,939
----------------------------------------------------------------------------------------------
                      OTHER ASSETS & LIABILITIES -- 3.6%                        $    7,007,579
----------------------------------------------------------------------------------------------
                      TOTAL NET ASSETS -- 100.0%                                $  197,359,518
==============================================================================================


*      Non-income producing security.

REIT   Real Estate Investment Trust.

(a)    At May 31, 2015, the net unrealized appreciation (depreciation) on
       investments based on cost for federal income tax purposes of $171,226,636
       was as follows:



                                                                             
       Aggregate gross unrealized appreciation for all investments in which
          there is an excess of value over tax cost                             $   38,375,134
       Aggregate gross unrealized depreciation for all investments in
          which there is an excess of tax cost over value                          (19,249,831)
                                                                                --------------
       Net unrealized appreciation                                              $   19,125,303
                                                                                ==============


Purchases and sales of securities (excluding temporary cash investments) for the
six months ended May 31, 2015, aggregated to $121,151,531 and $130,723,742,
respectively.

The accompanying notes are an integral part of these financial statements.

               Pioneer International Value Fund | Semiannual Report | 5/31/15 21


Schedule of Investments | 5/31/15 (unaudited) (continued)

(b)  Distributions of investments by country of issue (excluding temporary cash
     investments) as a percentage of total investment in securities, is as
     follows:



                                                                        
     Japan                                                                 30.6%
     United Kingdom                                                        11.1
     Switzerland                                                           11.0
     Germany                                                               10.6
     France                                                                 7.4
     Australia                                                              5.6
     Spain                                                                  4.7
     Netherlands                                                            4.1
     Ireland                                                                3.3
     Sweden                                                                 2.8
     Jersey Channel Islands                                                 2.6
     Canada                                                                 2.3
     Curacao                                                                1.2
     Bermuda                                                                1.0
     Other (individually less than 1%)                                      1.7
                                                                          -----
                                                                          100.0%
                                                                          =====


TOTAL RETURN SWAP AGREEMENT



---------------------------------------------------------------------------------------------------
                                                                                     Net
Notional                        Pay /      Obligation                  Expiration    Unrealized
Principal        Counterparty   Receive    Entity/Index    Coupon      Date          Appreciation
---------------------------------------------------------------------------------------------------
                                                                   
JPY 112,506      Citibank NA    Pay        JPX-NIKKEI      1M LIBOR    6/5/15        $774,015
                                           INDEX 400       +53 bps


NOTE: Principal amounts are denominated in U.S. Dollars unless otherwise noted:

JPY  Japanese Yen

Various inputs are used in determining the value of the Fund's investments.
These inputs are summarized in the three broad levels listed below.

   Level 1 -  quoted prices in active markets for identical securities.

   Level 2 -  other significant observable inputs (Including quoted prices for
              similar securities, interest rates, prepayment speeds, credit
              risk, etc.) See Notes to Financial Statements -- Note 1A.

   Level 3 -  significant unobservable inputs (Including the Fund's own
              assumptions in determining fair value of investments) See Notes to
              Financial Statements -- Note 1A.

Generally, equity securities are categorized as Level 1, fixed income securities
and senior loans as Level 2 and securities valued using fair value methods
(other than prices supplied by independent pricing services or broker-dealers)
are categorized as Level 3. See Notes to Financial Statements -- Note 1A.

The accompanying notes are an integral part of these financial statements.

22 Pioneer International Value Fund | Semiannual Report | 5/31/15


The following is a summary of the inputs used as of May 31, 2015, in valuing the
Fund's investments:



-----------------------------------------------------------------------------------
                             Level 1        Level 2        Level 3    Total
-----------------------------------------------------------------------------------
                                                          
Common Stocks
  Energy
    Oil & Gas Equipment
        & Services           $  2,378,174   $         --   $      --  $  2,378,174
    Oil & Gas Exploration
        & Production            2,913,826             --          --     2,913,826
  Materials
    Commodity Chemicals         1,503,571      3,044,695          --     4,548,266
  Insurance
    Insurance Brokers           2,449,524             --          --     2,449,524
    Property & Casualty
        Insurance               1,959,232             --          --     1,959,232
  All Other
    Common Stocks*                     --    176,102,917          --   176,102,917
-----------------------------------------------------------------------------------
Total                        $ 11,204,327   $179,147,612          --  $190,351,939
===================================================================================
Other Financial Instruments
Net unrealized depreciation
  on futures contracts       $ (1,161,651)  $         --   $      --  $ (1,161,651)
Net unrealized appreciation
  on swap contracts                    --        774,015          --       774,015
Net unrealized depreciation
  on spot contracts                    --           (560)         --          (560)
-----------------------------------------------------------------------------------
Total Other
  Financial Instruments      $ (1,161,651)  $    773,455   $      --  $   (388,196)
===================================================================================


*    Level 2 securities are valued using inputs/data furnished by independent
     pricing services using fair value factors.

During the six months ended May 31, 2015, there were no transfers between Levels
1, 2 and 3.

The accompanying notes are an integral part of these financial statements.

               Pioneer International Value Fund | Semiannual Report | 5/31/15 23


Schedule of Investments | 5/31/15 (unaudited) (continued)

The following is a summary of the fair valuation of certain Fund's assets and
liabilities as of May 31, 2015:



---------------------------------------------------------------------------------------------
                                 Level 1          Level 2         Level 3         Total
---------------------------------------------------------------------------------------------
                                                                      
Assets:
Futures collateral               $    --          $453,900        $        --     $  453,900
Foreign currencies, at value          --           242,273                 --        242,273
Variation margin for
   future contracts               44,008                --                 --         44,008
Liabilities:
Swap collateral                       --          (238,617)                --       (238,617)
---------------------------------------------------------------------------------------------
Total                            $44,008          $457,556        $        --     $  501,564
=============================================================================================


The accompanying notes are an integral part of these financial statements.

24 Pioneer International Value Fund | Semiannual Report | 5/31/15


Statement of Assets and Liabilities | 5/31/15 (unaudited)



                                                                          
ASSETS:
  Investment in securities (cost $169,843,911)                               $   190,351,939
  Cash                                                                             5,929,809
  Foreign currencies, at value (cost $247,675)                                       242,273
  Futures collateral                                                                 453,900
  Receivables --
     Investment securities sold                                                    3,275,448
     Fund shares sold                                                                 21,385
     Dividends and foreign taxes withheld                                          1,369,532
     Interest                                                                          8,072
  Variation margin for future contracts                                               44,008
  Unrealized appreciation on swap contracts                                          774,015
  Prepaid expenses                                                                    30,830
---------------------------------------------------------------------------------------------
          Total assets                                                       $   202,501,211
=============================================================================================
LIABILITIES:
   Payables --
      Investment securities purchased                                        $     3,542,919
      Fund shares repurchased                                                         34,085
      Dividends                                                                          120
   Swap collateral                                                                   238,617
   Net unrealized depreciation on futures contracts                                1,161,651
   Unrealized depreciation on spot contracts                                             560
   Due to affiliates                                                                  70,106
   Due to Pioneer Investment Management, Inc.                                          3,257
   Trustee fees                                                                        1,093
   Accrued expenses                                                                   89,285
---------------------------------------------------------------------------------------------
          Total liabilities                                                  $     5,141,693
=============================================================================================
NET ASSETS:
  Paid-in capital                                                            $   289,071,048
  Undistributed net investment income                                                903,765
  Accumulated net realized loss on investments, futures contracts,
     swap contracts and foreign currency transactions                           (112,637,280)
  Net unrealized appreciation on investments                                      20,508,028
  Net unrealized depreciation on futures contracts                                (1,161,651)
  Net unrealized appreciation on swap contracts                                      774,015
  Net unrealized depreciation on forward foreign currency contracts and

     other assets and liabilities denominated in foreign currencies                  (98,407)
---------------------------------------------------------------------------------------------
         Total net assets                                                    $   197,359,518
=============================================================================================
NET ASSET VALUE PER SHARE:
(No par value, unlimited number of shares authorized)
   Class A (based on $86,019,091/3,844,406 shares)                           $         22.38
   Class C (based on $12,222,579/621,958 shares)                             $         19.65
   Class Y (based on $99,117,848/4,423,108 shares)                           $         22.41
MAXIMUM OFFERING PRICE:
  Class A ($22.38 (divided by) 94.25%)                                       $         23.75
=============================================================================================


The accompanying notes are an integral part of these financial statements.

               Pioneer International Value Fund | Semiannual Report | 5/31/15 25


Statement of Operations (unaudited)

For the Six Months Ended 5/31/15



                                                                                      
INVESTMENT INCOME:
   Dividends (net of foreign taxes withheld of $222,023)               $     2,881,166
----------------------------------------------------------------------------------------------------------
         Total investment income                                                            $   2,881,166
----------------------------------------------------------------------------------------------------------
EXPENSES:
  Management fees                                                      $       810,417
  Transfer agent fees and expenses
     Class A                                                                   120,955
     Class C                                                                    15,394
     Class Y                                                                       323
  Distribution fees
     Class A                                                                   103,080
     Class C                                                                    55,948
  Shareholder communications expense                                            58,055
  Administrative reimbursement                                                  32,603
  Custodian fees                                                                23,644
  Registration fees                                                             24,996
  Professional fees                                                             25,831
  Printing expense                                                               8,781
  Fees and expenses of nonaffiliated Trustees                                    3,473
  Miscellaneous                                                                 20,921
----------------------------------------------------------------------------------------------------------
     Total expenses                                                                         $   1,304,421
     Less fees waived and expenses reimbursed
         by Pioneer Investment Management, Inc.                                                   (90,839)
----------------------------------------------------------------------------------------------------------
     Net expenses                                                                           $   1,213,582
----------------------------------------------------------------------------------------------------------
         Net investment income                                                              $   1,667,584
----------------------------------------------------------------------------------------------------------
REALIZED AND UNREALIZED GAIN (LOSS) ON INVESTMENTS,
FUTURES CONTRACTS, SWAP CONTRACTS AND FOREIGN
CURRENCY TRANSACTIONS:
  Net realized gain (loss) on:
     Investments                                                       $     1,486,564
     Futures contracts                                                      (2,407,411)
     Swap contracts                                                          1,848,706
     Forward foreign currency contracts and other assets
        and liabilities denominated in foreign currencies                     (542,344)     $     385,515
----------------------------------------------------------------------------------------------------------
  Change in net unrealized appreciation (depreciation) on:
     Investments                                                       $     9,014,220
     Futures contracts                                                        (188,545)
     Swap contracts                                                            346,016
     Forward foreign currency contracts and other assets
        and liabilities denominated in foreign currencies                       13,652      $   9,185,343
----------------------------------------------------------------------------------------------------------
  Net gain on investments, futures contracts, written options,
     swap contracts and foreign currency transactions                                       $   9,570,858
----------------------------------------------------------------------------------------------------------
  Net increase in net assets resulting from operations                                      $  11,238,442
==========================================================================================================


The accompanying notes are an integral part of these financial statements.

26 Pioneer International Value Fund | Semiannual Report | 5/31/15


Statements of Changes in Net Assets



----------------------------------------------------------------------------------------------------------
                                                                   Six Months
                                                                   Ended
                                                                   5/31/15                Year Ended
                                                                   (unaudited)            11/30/14
----------------------------------------------------------------------------------------------------------
                                                                                    
FROM OPERATIONS:
Net investment income                                              $       1,667,584      $     9,120,807
Net realized gain on investments and foreign
  currency transactions                                                      385,515           36,572,326
Change in net unrealized appreciation (depreciation)
  on investments and foreign currency transactions                         9,185,343          (34,569,935)
----------------------------------------------------------------------------------------------------------
      Net decrease in net assets resulting from operations         $      11,238,442      $    11,123,198
----------------------------------------------------------------------------------------------------------
DISTRIBUTIONS TO SHAREOWNERS:
Net investment income:
      Class A ($1.23 and $0.50 per share, respectively)            $      (4,545,498)     $    (1,912,284)
      Class B* ($0.00 and $0.28 per share, respectively)                          --              (41,082)
      Class C ($1.06 and $0.34 per share, respectively)                     (607,330)            (190,074)
      Class Y ($1.31 and $0.59 per share, respectively)                   (5,990,875)          (5,869,819)
----------------------------------------------------------------------------------------------------------
         Total distributions to shareowners                        $     (11,143,703)     $    (8,013,259)
----------------------------------------------------------------------------------------------------------
FROM FUND SHARE TRANSACTIONS:
Net proceeds from sale or exchange of shares                       $      15,132,299      $    21,441,174
Reinvestment of distributions                                              5,077,184            4,707,605
Cost of shares repurchased                                               (19,917,067)        (157,345,597)
----------------------------------------------------------------------------------------------------------
      Net decrease in net assets resulting from
         Fund share transactions                                   $         292,416      $  (131,196,818)
----------------------------------------------------------------------------------------------------------
      Net increase (decrease) in net assets                        $         387,155      $  (128,086,879)
NET ASSETS:
Beginning of period                                                      196,972,363          325,059,242
----------------------------------------------------------------------------------------------------------
End of period                                                      $     197,359,518      $   196,972,363
----------------------------------------------------------------------------------------------------------
Undistributed net investment income                                $         903,765      $    10,379,884
==========================================================================================================


* Class B shares converted to Class A shares on November 10, 2014.

The accompanying notes are an integral part of these financial statements.

               Pioneer International Value Fund | Semiannual Report | 5/31/15 27


Statements of Changes in Net Assets (continued)




------------------------------------------------------------------------------------------------------
                                  '15 Shares    '15 Amount
                                  (unaudited)   (unaudited)            '14 Shares      '14 Amount
------------------------------------------------------------------------------------------------------
                                                                           
Class A
Shares sold                        450,914      $    9,940,887            418,347      $    9,403,427
Reinvestment of distributions      208,182            4,326,027            80,981           1,812,361
Less shares repurchased           (553,906)         (12,088,702)         (610,364)        (13,731,684)
------------------------------------------------------------------------------------------------------
      Net increase                 105,190      $     2,178,212          (111,036)     $   (2,515,896)
======================================================================================================
Class B*
Shares sold or exchanged                --      $            --             6,745      $      140,554
Reinvestment of distributions           --                   --             1,987              40,465
Less shares repurchased                 --                   --          (161,834)         (3,250,196)
------------------------------------------------------------------------------------------------------
      Net decrease                      --      $            --          (153,102)     $   (3,069,177)
======================================================================================================
Class C
Shares sold                        161,351      $     3,115,798           128,228      $    2,556,183
Reinvestment of distributions       30,978              567,517             8,833             175,685
Less shares repurchased           (122,011)          (2,324,543)         (129,224)         (2,565,734)
------------------------------------------------------------------------------------------------------
      Net increase (decrease)       70,318      $     1,358,772             7,837      $      166,134
======================================================================================================
Class Y
Shares sold                         96,767      $     2,075,614           414,758      $    9,341,010
Reinvestment of distributions        8,837              183,640           119,763           2,679,094
Less shares repurchased           (258,825)          (5,503,822)       (5,908,934)       (137,797,983)
------------------------------------------------------------------------------------------------------
      Net decrease                (153,221)     $    (3,244,568)       (5,374,413)     $ (125,777,879)
======================================================================================================


*    Class B shares converted to Class A shares on November 10, 2014.

The accompanying notes are an integral part of these financial statements.

28 Pioneer International Value Fund | Semiannual Report | 5/31/15


Financial Highlights




------------------------------------------------------------------------------------------------------------------------------------
                                                              Six Months
                                                              Ended         Year          Year      Year      Year       Year
                                                              5/31/15       Ended         Ended     Ended     Ended      Ended
                                                              (unaudited)   11/30/14      11/30/13  11/30/12  11/30/11   11/30/10
------------------------------------------------------------------------------------------------------------------------------------
                                                                                                       
Class A
Net asset value, beginning of period                          $    22.34    $   22.49     $ 18.67   $ 17.99   $ 18.72    $  19.16
------------------------------------------------------------------------------------------------------------------------------------
Increase (decrease) from investment operations:
   Net investment income (loss)                               $     0.19    $    0.63     $  0.27   $  0.36   $  0.37    $   0.24
   Net realized and unrealized gain (loss) on investments           1.08        (0.28)       3.87      0.58     (0.88)      (0.61)
------------------------------------------------------------------------------------------------------------------------------------
Net increase (decrease) from investment operations            $     1.27    $    0.35     $  4.14   $  0.94   $ (0.51)   $  (0.37)
------------------------------------------------------------------------------------------------------------------------------------
Distribution to shareowners:
   Net investment income                                      $    (1.23)   $   (0.50)    $ (0.32)  $ (0.26)  $ (0.22)   $  (0.07)
------------------------------------------------------------------------------------------------------------------------------------
Total distributions                                           $    (1.23)   $   (0.50)    $ (0.32)  $ (0.26)  $ (0.22)   $  (0.07)
------------------------------------------------------------------------------------------------------------------------------------
Net increase (decrease) in net asset value                    $     0.04    $   (0.15)    $  3.82   $  0.68   $ (0.73)   $  (0.44)
------------------------------------------------------------------------------------------------------------------------------------
Net asset value, end of period                                $    22.38    $   22.34     $ 22.49   $ 18.67   $ 17.99    $  18.72
====================================================================================================================================
Total return*                                                       6.09%        1.55%      22.50%     5.38%    (2.84)%     (1.94)%
Ratio of net expenses to average net assets                         1.45%**      1.46%(a)    1.45%     1.45%     1.45%       1.45%
Ratio of net investment income (loss) to average net assets         1.58%**      2.72%       1.26%     1.89%     1.80%       1.18%
Portfolio turnover rate                                              132%**       100%        101%       61%       66%         66%
Net assets, end of period (in thousands)                      $   86,019    $  83,544     $86,602   $75,784   $79,559    $ 89,145
Ratios with no waiver of fees and assumption of expenses by
   the Adviser and no reduction for fees paid indirectly:
   Total expenses                                                   1.67%**      1.70%(a)    1.69%     1.82%     1.77%       1.76%
   Net investment income (loss)                                     1.36%**      2.48%       1.02%     1.53%     1.48%       0.86%
====================================================================================================================================


*    Assumes initial investment at net asset value at the beginning of each
     period, reinvestment of all distributions, the complete redemption of the
     investment at net asset value at the end of each period and no sales
     charges. Total return would be reduced if sales charges were taken into
     account.

**   Annualized.

(a) Includes interest expense of 0.01%.

The accompanying notes are an integral part of these financial statements.

Pioneer International Value Fund | Semiannual Report | 5/31/15 29


Financial Highlights (continued)



--------------------------------------------------------------------------------------------------------------------------------
                                                             Six Months
                                                             Ended       Year         Year      Year      Year       Year
                                                             5/31/15     Ended        Ended     Ended     Ended      Ended
                                                             (unaudited) 11/30/14     11/30/13  11/30/12  11/30/11   11/30/10
--------------------------------------------------------------------------------------------------------------------------------
                                                                                                   
Class C
Net asset value, beginning of period                         $ 19.69     $ 19.91      $ 16.57   $ 15.97   $ 16.64    $  17.12
--------------------------------------------------------------------------------------------------------------------------------
Increase (decrease) from investment operations:
   Net investment income (loss)                              $  0.08     $  0.35      $  0.08   $  0.18   $  0.19    $   0.06
   Net realized and unrealized gain (loss) on investments       0.94       (0.23)        3.44      0.53     (0.80)      (0.54)
--------------------------------------------------------------------------------------------------------------------------------
Net increase (decrease) from investment operations           $  1.02     $  0.12      $  3.52   $  0.71   $ (0.61)   $  (0.48)
--------------------------------------------------------------------------------------------------------------------------------
Distribution to shareowners:
   Net investment income                                     $ (1.06)    $ (0.34)     $ (0.18)  $ (0.11)  $ (0.06)   $     --
--------------------------------------------------------------------------------------------------------------------------------
Total distributions                                          $ (1.06)    $ (0.34)     $ (0.18)  $ (0.11)  $ (0.06)   $     --
--------------------------------------------------------------------------------------------------------------------------------
Net increase (decrease) in net asset value                   $ (0.04)    $ (0.22)     $  3.34   $  0.60   $ (0.67)   $  (0.48)
--------------------------------------------------------------------------------------------------------------------------------
Net asset value, end of period                               $ 19.65     $ 19.69      $ 19.91   $ 16.57   $ 15.97    $  16.64
================================================================================================================================
Total return*                                                   5.59%       0.60%       21.43%     4.48%    (3.71)%     (2.80)%
Ratio of net expenses to average net assets                     2.35%**     2.36%(a)     2.35%     2.35%     2.35%       2.35%
Ratio of net investment income (loss) to average net assets     0.69%**     1.78%        0.36%     0.99%     0.90%       0.26%
Portfolio turnover rate                                          132%**      100%         101%       61%       66%         66%
Net assets, end of period (in thousands)                     $12,223     $10,865      $10,826   $ 9,910   $10,523    $ 12,126
Ratios with no waiver of fees and assumption of expenses by
   the Adviser and no reduction for fees paid indirectly:
   Total expenses                                               2.38%**     2.44%(a)     2.41%     2.63%     2.52%       2.58%
Net investment income (loss)                                    0.66%**     1.70%        0.30%     0.71%     0.73%       0.02%
================================================================================================================================


*    Assumes initial investment at net asset value at the beginning of each
     period, reinvestment of all distributions, the complete redemption of the
     investment at net asset value at the end of each period and no sales
     charges. Total return would be reduced if sales charges were taken into
     account.

**   Annualized.

(a)  Includes interest expense of 0.01%.

The accompanying notes are an integral part of these financial statements.

30 Pioneer International Value Fund | Semiannual Report | 5/31/15




------------------------------------------------------------------------------------------------------------------------------------
                                                            Six Months
                                                            Ended          Year          Year       Year       Year       Year
                                                            5/31/15        Ended         Ended      Ended      Ended      Ended
                                                            (unaudited)    11/30/14      11/30/13   11/30/12   11/30/11   11/30/10
------------------------------------------------------------------------------------------------------------------------------------
                                                                                                        
Class Y
Net asset value, beginning of period                        $    22.41     $  22.56      $  18.73   $  18.07   $  18.80   $  19.22
------------------------------------------------------------------------------------------------------------------------------------
Increase (decrease) from investment operations:
   Net investment income (loss)                             $     0.23     $   1.29      $   0.37   $   0.41   $   0.44   $   0.30
   Net realized and unrealized gain (loss) on investments         1.08        (0.85)         3.87       0.60      (0.87)     (0.59)
------------------------------------------------------------------------------------------------------------------------------------
Net increase (decrease) from investment operations          $     1.31     $   0.44      $   4.24   $   1.01   $  (0.43)  $  (0.29)
------------------------------------------------------------------------------------------------------------------------------------
Distribution to shareowners:
   Net investment income                                    $    (1.31)    $  (0.59)     $  (0.41)  $  (0.35)  $  (0.30)  $  (0.13)
------------------------------------------------------------------------------------------------------------------------------------
Total distributions                                         $    (1.31)    $  (0.59)     $  (0.41)  $  (0.35)  $  (0.30)  $  (0.13)
------------------------------------------------------------------------------------------------------------------------------------
Net increase (decrease) in net asset value                  $       --     $  (0.15)     $   3.83   $   0.66   $  (0.73)  $  (0.42)
------------------------------------------------------------------------------------------------------------------------------------
Net asset value, end of period                              $    22.41     $  22.41      $  22.56   $  18.73   $  18.07   $  18.80
====================================================================================================================================
Total return*                                                     6.30%        1.94%        23.02%      5.79%     (2.39)%    (1.51)%
Ratio of net expenses to average net assets                       1.00%**      1.06%(a)      1.04%      1.01%      1.01%      1.01%
Ratio of net investment income (loss) to average net assets       2.02%**      3.89%         1.69%      2.35%      2.26%      1.63%
Portfolio turnover rate                                            132%**       100%          101%        61%        66%        66%
Net assets, end of period (in thousands)                    $   99,118     $102,563      $224,523   $216,217   $189,321   $195,147
====================================================================================================================================


*    Assumes initial investment at net asset value at the beginning of each
     period, reinvestment of all distributions, the complete redemption of the
     investment at net asset value at the end of each period and no sales
     charges. Total return would be reduced if sales charges were taken into
     account.

**   Annualized.

(a) Includes interest expense of 0.01%.

The accompanying notes are an integral part of these financial statements.

               Pioneer International Value Fund | Semiannual Report | 5/31/15 31


Notes to Financial Statements | 5/31/15 (unaudited)

1. Organization and Significant Accounting Policies

Pioneer International Value Fund (the Fund) is the sole portfolio comprising
Pioneer Series Trust VIII, a Delaware statutory trust. The Fund is registered
under the Investment Company Act of 1940 as a diversified, open-end management
investment company. The investment objective of the Fund is long-term growth of
capital.

During the periods covered by this report, the Fund offered three classes of
shares designated as Class A, Class C and Class Y shares. Class Y shares
commenced operations on April 15, 2009. The Fund ceased to offer Class B shares
on November 10, 2014. Class B shares were converted to Class A shares as of the
close of business on November 10, 2014. Each class of shares represents an
interest in the same portfolio of investments of the Fund and has identical
rights (based on relative net asset values) to assets and liquidation proceeds.
Share classes can bear different rates of class-specific fees and expenses such
as transfer agent and distribution fees. Differences in class-specific fees and
expenses will result in differences in net investment income and, therefore, the
payment of different dividends from net investment income earned by each class.
The Amended and Restated Declaration of Trust of the Fund gives the Board the
flexibility to specify either per-share voting or dollar-weighted voting when
submitting matters for shareholder approval. Under per-share voting, each share
of a class of the Fund is entitled to one vote. Under dollar-weighted voting, a
shareholder's voting power is determined not by the number of shares owned, but
by the dollar value of the shares on the record date. Each share class has
exclusive voting rights with respect to matters affecting only that class,
including with respect to the distribution plan for that class. There is no
distribution plan for Class Y shares.

The Fund's financial statements have been prepared in conformity with U.S.
generally accepted accounting principles that require the management of the Fund
to, among other things, make estimates and assumptions that affect the reported
amounts of assets and liabilities, the disclosure of contingent assets and
liabilities at the date of the financial statements, and the reported amounts of
income, expenses and gain or loss on investments during the reporting period.
Actual results could differ from those estimates.

The following is a summary of significant accounting policies followed by the
Fund in the preparation of its financial statements, which are consistent with
those policies generally accepted in the investment company industry:

32 Pioneer International Value Fund | Semiannual Report | 5/31/15


A.   Security Valuation

     Security transactions are recorded as of trade date. The net asset value of
     the Fund is computed once daily, on each day the New York Stock Exchange
     (NYSE) is open, as of the close of regular trading on the NYSE. In
     computing the net asset value, securities that have traded on an exchange
     are valued using the last sale price on the principal exchange where they
     are traded. Securities that have not traded on the date of valuation, or
     securities for which sale prices are not available, generally are valued
     using the mean between the last bid and asked prices. Shares of money
     market mutual funds are valued at such funds' net asset value.

     The Fund invests primarily in securities of non-U.S. issuers. The principal
     exchanges and markets for such securities have closing times prior to the
     close of the NYSE. However, the value of these securities may be influenced
     by changes in global markets occurring after the closing times of the local
     exchanges and markets up to the time the Fund determines its net asset
     value. Consequently, the Board of Trustees of the Fund has determined that
     daily adjustments to the valuation of securities of non-U.S. issuers by
     utilizing an independent pricing service that supplies an appropriate fair
     value factor is appropriate for the Fund.

     Securities for which independent pricing services are unable to supply
     prices or for which market prices and/or quotations are not readily
     available or are considered to be unreliable are valued by a fair valuation
     team comprised of certain personnel of Pioneer Investment Management, Inc.
     (PIM), the Fund's investment adviser, pursuant to procedures adopted by the
     Fund's Board of Trustees. PIM's fair valuation team uses fair value methods
     approved by the Valuation Committee of the Board of Trustees. PIM's fair
     valuation team is responsible for monitoring developments that may impact
     fair valued securities and for discussing and assessing fair value on an
     ongoing basis, and at least quarterly, with the Valuation Committee of the
     Board of Trustees.

     Inputs used when applying fair value methods to value a security may
     include credit ratings, the financial condition of the company, current
     market conditions and comparable securities. The Fund may use fair value
     methods if it is determined that a significant event has occurred after the
     close of the exchange or market on which the security trades and prior to
     the determination of the Fund's net asset value. Examples of a significant
     event might include political or economic news, corporate restructurings,
     natural disasters, terrorist activity or trading halts. Thus, the valuation
     of the Fund's securities may differ significantly from exchange prices and
     such differences could be material.

               Pioneer International Value Fund | Semiannual Report | 5/31/15 33


     At May 31, 2015, there were no securities valued using fair value methods
     (other than securities valued using prices supplied by independent pricing
     services or broker-dealers).

B.   Investment Income and Transactions

     Dividend income is recorded on the ex-dividend date, except that certain
     dividends from foreign securities where the ex-dividend date may have
     passed are recorded as soon as the Fund becomes aware of the ex-dividend
     data in the exercise of reasonable diligence.

     Interest income, including interest on income-bearing cash accounts, is
     recorded on the accrual basis. Dividend and interest income are reported
     net of unrecoverable foreign taxes withheld at the applicable country
     rates.

     Gains and losses on sales of investments are calculated on the identified
     cost method for both financial reporting and federal income tax purposes.

C.   Foreign Currency Translation

     The books and records of the Fund are maintained in U.S. dollars. Amounts
     denominated in foreign currencies are translated into U.S. dollars using
     current exchange rates.

     Net realized gains and losses on foreign currency transactions, if any,
     represent, among other things, the net realized gains and losses on foreign
     currency contracts, disposition of foreign currencies and the difference
     between the amount of income accrued and the U.S. dollars actually
     received. Further, the effects of changes in foreign currency exchange
     rates on investments are not segregated in the Statement of Operations from
     the effects of changes in the market price of those securities but are
     included with the net realized and unrealized gain or loss on investments.

D.   Forward Foreign Currency Contracts

     The Fund may enter into forward foreign currency contracts (contracts) for
     the purchase or sale of a specific foreign currency at a fixed price on a
     future date. All contracts are marked to market daily at the applicable
     exchange rates, and any resulting unrealized appreciation or depreciation
     are recorded in the Fund's financial statements. The Fund records realized
     gains and losses at the time a contract is offset by entry into a closing
     transaction or extinguished by delivery of the currency. Risks may arise
     upon entering into these contracts from the potential inability of
     counterparties to meet the terms of the contract and from unanticipated
     movements in the value of foreign currencies relative to the U.S. dollar
     (see Note 6).

34 Pioneer International Value Fund | Semiannual Report | 5/31/15


E.   Federal Income Taxes

     It is the Fund's policy to comply with the requirements of the Internal
     Revenue Code applicable to regulated investment companies and to distribute
     all of its taxable income and net realized capital gains, if any, to its
     shareowners. Therefore, no provision for federal income taxes is required.
     As of November 30, 2014, the Fund did not accrue any interest or penalties
     with respect to uncertain tax positions, which, if applicable, would be
     recorded as an income tax expense in the Statement of Operations. Tax
     returns filed within the prior three years remain subject to examination by
     federal and state tax authorities.

     In addition to the requirements of the Internal Revenue Code, the Fund may
     also be required to pay local taxes on the recognition of capital gains
     and/or the repatriation of foreign currencies in certain countries. During
     the year ended November 30, 2014, the Fund paid no such taxes.

     The amount and character of income and capital gain distributions to
     shareowners are determined in accordance with federal income tax rules,
     which may differ from U.S. generally accepted accounting principles.
     Distributions in excess of net investment income or net realized gains are
     temporary overdistributions for financial statement purposes resulting from
     differences in the recognition or classification of income or distributions
     for financial statement and tax purposes. Capital accounts within the
     financial statements are adjusted for permanent book/tax differences to
     reflect tax character, but are not adjusted for temporary differences.

     The tax character of current year distributions payable will be determined
     at the end of the current taxable year. The tax character of distributions
     paid during the years ended November 30, 2014 were as follows:



     ---------------------------------------------------------------------------
                                                                           2014
     ---------------------------------------------------------------------------
                                                                  
     Distribution paid from:
     Ordinary income                                                 $8,013,259
     ---------------------------------------------------------------------------
        Total                                                        $8,013,259
     ===========================================================================


     The following shows the components of distributable earnings on a federal
     income tax basis at November 30, 2014:



     ---------------------------------------------------------------------------
                                                                           2014
     ---------------------------------------------------------------------------
                                                               
     Distributable earnings:
     Undistributed ordinary income                                $  11,006,670
     Capital loss carryforward                                     (111,838,946)
     Net unrealized appreciation                                      9,026,007
     ---------------------------------------------------------------------------
          Total                                                   $ (91,806,269)
     ===========================================================================


               Pioneer International Value Fund | Semiannual Report | 5/31/15 35


     The difference between book-basis and tax-basis net unrealized appreciation
     is attributable to the tax deferral of losses on wash sales, adjustments
     relating to PFICs, and the mark to market of swaps and futures contracts.

F.   Fund Shares

     The Fund records sales and repurchases of its shares as of trade date.
     Pioneer Funds Distributor, Inc. (PFD), the principal underwriter for the
     Fund and a wholly owned indirect subsidiary of UniCredit S.p.A.
     (UniCredit), earned $6,985 in underwriting commissions on the sale of Class
     A shares during the six months ended May 31, 2015.

G.   Class Allocations

     Income, common expenses and realized and unrealized gains and losses are
     calculated at the Fund level and allocated daily to each class of shares
     based on its respective percentage of adjusted net assets at the beginning
     of the day.

     Distribution fees are calculated based on the average daily net asset value
     attributable to Class A and Class C shares of the Fund, respectively (see
     Note 4). Class Y shares do not pay distribution fees. All expenses and fees
     paid to the transfer agent, Pioneer Investment Management Shareholder
     Services, Inc. (PIMSS), for its services are allocated among the classes of
     shares based on the number of accounts in each class and the ratable
     allocation of related out-of-pocket expenses (see Note 3).


     Distributions to shareowners are recorded as of the ex-dividend date.
     Distributions paid by the Fund with respect to each class of shares are
     calculated in the same manner and at the same time except that net
     investment income dividends to Class A, Class C and Class Y shares can
     reflect different transfer agent and distribution expense rates.

H.   Risks

     Investing in foreign and/or emerging markets securities involves risks
     relating to interest rates, currency exchange rates and economic and
     political conditions. The Fund may invest a substantial amount of its
     assets in issuers located in a limited number of countries and therefore is
     susceptible to adverse economic, political or regulatory developments
     affecting those countries. At times, the Fund's investments may represent
     industries or industry sectors that are interrelated or have common risks,
     making the Fund more susceptible to any economic, political, or regulatory
     developments or other risks affecting those industries and sectors. The
     Fund's prospectus contains unaudited information regarding the Fund's
     principal risks. Please refer to that document when considering the Fund's
     principal risks.

36 Pioneer International Value Fund | Semiannual Report | 5/31/15


I.   Repurchase Agreements

     With respect to repurchase agreements entered into by the Fund, the value
     of the underlying securities (collateral), including accrued interest, is
     required to be equal to or in excess of the repurchase price. The
     collateral for all repurchase agreements is held in safekeeping in the
     customer-only account of the Fund's custodian or a subcustodian of the
     Fund. PIM is responsible for determining that the value of the collateral
     remains at least equal to the repurchase price. During the six months ended
     May 31, 2015, the Fund had no open repurchase agreements.

J.   Futures Contracts

     The Fund may enter into futures transactions in order to attempt to hedge
     against changes in interest rates, securities prices and currency exchange
     rates or to seek to increase total return. Futures contracts are types of
     derivatives. All futures contracts entered into by the Fund are traded on a
     futures exchange. Upon entering into a futures contract, the Fund is
     required to deposit with a broker an amount of cash or securities equal to
     the minimum "initial margin" requirements of the associated futures
     exchange. The amount of cash deposited with the broker as collateral at May
     31, 2015 was $453,900. Subsequent payments for futures contracts
     ("variation margin") are paid or received by the Fund, depending on the
     daily fluctuation in the value of the contracts, and are recorded by the
     Fund as unrealized gains or losses. When the contract is closed, the Fund
     realizes a gain or loss equal to the difference between the opening and
     closing value of the contract as well as any fluctuation in foreign
     currency exchange rates where applicable. Futures contracts are subject to
     market risk, interest rate risk and currency exchange rate risk. Changes in
     value of the contracts may not directly correlate to the changes in value
     of the underlying securities. With futures, there is minimal counterparty
     credit risk to the Fund since futures are exchange-traded and the
     exchange's clearinghouse, as counterparty to all exchange-traded futures,
     guarantees the futures against default. The average value of contracts open
     during the six months ended May 31, 2015 was $12,955,967.

     At May 31, 2015, open futures contracts were as follows:



     ---------------------------------------------------------------------------
                         Number of
                         Contracts     Settlement                  Unrealized
     Type                Long/(Short)  Month        Value          Depreciation
     ---------------------------------------------------------------------------
                                                        
     TOPIX Index Future  (103)         6/15         ($13,875,045)   ($1,161,651)
     ---------------------------------------------------------------------------
        Total                                                       ($1,161,651)
     ===========================================================================


               Pioneer International Value Fund | Semiannual Report | 5/31/15 37


K.   Total Return Swap Agreements

     The Fund may enter into a total return swap to attempt to manage and/or
     gain exposure to a security or market. Pursuant to a total return swap
     agreement, the Fund negotiates with a counterparty to exchange a periodic
     stream of payments. One party makes payments based on the total return of a
     reference asset (such as a security or a basket of securities or securities
     index), and in return receives fixed or floating rate interest payments.
     The total return of the reference asset typically includes appreciation or
     depreciation on the reference asset, plus any interest or dividend
     payments. To the extent that the total return of the reference asset
     exceeds or falls short of the offsetting interest rate obligation, the Fund
     will receive a payment from or make a payment to the counterparty.

     Total return swap contracts are marked-to-market daily using valuations
     supplied by independent sources and the change in value, if any, is
     recorded as unrealized appreciation or depreciation in the Statement of
     Assets and Liabilities. Payments received or made are recorded as realized
     gains or losses in the Statement of Operations. Total return swap contracts
     are subject to counterparty risk and unanticipated movements in value of
     exchange rates, interest rates, securities or the index.


     Open total return swap contracts at May 31, 2015 are listed in the Schedule
     of Investments. The average value of swap contracts open during the six
     months ended May 31, 2015 was $369,723.

2. Management Agreement

PIM, a wholly owned indirect subsidiary of UniCredit, manages the Fund's
portfolio. Management fees are calculated daily at the annual rate of 0.85% of
the Fund's average daily net assets up to $500 million and 0.75% of the excess
over $500 million. For the six months ended May 31, 2015, the effective
management fee (excluding waivers and/or assumptions of expenses) was equivalent
to 0.85% of the Fund's average daily net assets.

PIM has contractually agreed to limit ordinary operating expenses to the extent
required to reduce Fund expenses to 1.45% and 2.35%, of the average daily net
assets attributable to Class A and Class C shares, respectively. Fees waived and
expenses reimbursed during the six months ended May 31, 2015 are reflected on
the Statement of Operations. Class Y shares do not have an expense limitation.
These expense limitations are in effect through April 1, 2016. There can be no
assurance that PIM will extend the expense limitation agreement for a class of
shares beyond the date referred to above.

In addition, under the management and administration agreements, certain other
services and costs, including accounting, regulatory reporting and insurance
premiums, are paid by the Fund as administrative reimbursements.

38 Pioneer International Value Fund | Semiannual Report | 5/31/15


Included in "Due to affiliates" reflected on the Statement of Assets and
Liabilities is $19,043 in management fees, administrative costs and certain
other reimbursements payable to PIM at May 31, 2015.

3. Transfer Agent

PIMSS, a wholly owned indirect subsidiary of UniCredit, provides substantially
all transfer agent and shareowner services to the Fund at negotiated rates.

In addition, the Fund reimburses PIMSS for out-of-pocket expenses incurred by
PIMSS related to shareholder communications activities such as proxy and
statement mailings, outgoing phone calls and omnibus relationship contracts. For
the six months ended May 31, 2015, such out-of-pocket expenses by class of
shares were as follows:



-------------------------------------------------------------------------------
Shareholder Communications:
-------------------------------------------------------------------------------
                                                                     
Class A                                                                 $51,689
Class C                                                                   6,366
-------------------------------------------------------------------------------
    Total                                                               $58,055
===============================================================================


Included in "Due to affiliates" reflected on the Statement of Assets and
Liabilities is $47,332 in transfer agent fees and out-of-pocket reimbursements
payable to PIMSS at May 31, 2015.

4. Distribution Plan

The Fund has adopted a Distribution Plan pursuant to Rule 12b-1 of the
Investment Company Act of 1940 with respect to its Class A and Class C shares.
Pursuant to the Plan, the Fund pays PFD 0.25% of the average daily net assets
attributable to Class A shares as compensation for personal services and/or
account maintenance services or distribution services with regard to Class A
shares. Pursuant to the Plan, the Fund also pays PFD 1.00% of the average daily
net assets attributable to Class C shares. The fee for Class C shares consists
of a 0.25% service fee and a 0.75% distribution fee paid as compensation for
personal services and/or account maintenance services or distribution services
with regard to Class C shares. Included in "Due to affiliates" reflected on the
Statement of Assets and Liabilities is $3,731 in distribution fees payable to
PFD at May 31, 215.


In addition, redemptions of each class of shares (except Class Y shares) may be
subject to a contingent deferred sales charge (CDSC). A CDSC of 1.00% may be
imposed on redemptions of certain net asset value purchases of Class A shares
within 12 months of purchase. Redemptions of Class C shares within 12 months of
purchase are subject to a CDSC of 1.00%, based on the lower of cost or market
value of shares being redeemed. Shares purchased as part of an

               Pioneer International Value Fund | Semiannual Report | 5/31/15 39


exchange remain subject to any CDSC that applied to the original purchase of
those shares. There is no CDSC for Class Y shares. Proceeds from the CDSCs are
paid to PFD. For the six months ended May 31, 2015, CDSCs in the amount of
$13,808 were paid to PFD.

5. Expense Offset Arrangements

The Fund has entered into certain expense offset arrangements with PIMSS which
may result in a reduction in the Fund's total expenses, due to interest earned
on cash held by PIMSS. For the six months ended May 31, 2015, the Fund's
expenses were not reduced under such arrangements.

6. Forward Foreign Currency Contracts

At May 31, 2015, the Fund had entered into various forward foreign currency
contracts that obligate the Fund to deliver or take delivery of currencies at
specified future maturity dates. Alternatively, prior to the settlement date of
a forward foreign currency contract, the Fund may close out such contract by
entering into an offsetting contract. The average value of forward foreign
currency contracts open during the six months ended May 31, 2015 was $785,684.
There are no open forward foreign currency contracts at May 31, 2015.

7. Line of Credit Facility

The Fund, along with certain other funds in the Pioneer Family of Funds (the
Funds), participates in a committed, unsecured revolving line of credit
facility. Borrowings are used solely for temporary or emergency purposes. The
Fund may borrow up to the lesser of the amount available under the facility or
the limits set for borrowing by the Fund's prospectus and the 1940 Act. The
credit facility in effect during the six months ended May 31, 2015, was in the
amount of $215 million. Under such facility, depending on the type of loan,
interest on borrowings is payable at the London Interbank Offered Rate (LIBOR)
plus 0.85% (0.90% prior to February 12, 2014) on an annualized basis, or the
Alternate Base Rate, which is the greater of (a) the facility's administrative
agent's daily announced prime rate on the borrowing date, (b) 2% plus the
Federal Funds Rate on the borrowing date and (c) 2% plus the overnight Euro
dollar rate on the borrowing date. The Funds pay an annual commitment fee to
participate in a credit facility. The commitment fee is allocated among
participating Funds based on an allocation schedule set forth in the credit
agreement. For the six months ended May 31, 2015, the Fund had no outstanding
borrowings.

40 Pioneer International Value Fund | Semiannual Report | 5/31/15


8. Assets and Liabilities Offsetting

Financial instruments subject to an enforceable master netting agreement have
been offset on the Statement of Assets and Liabilities. The following charts
show gross assets and liabilities of the Fund as of May 31, 2015.




--------------------------------------------------------------------------------------------------
Assets:
                                               Net
                                  Gross        Amounts                  Gross Amounts
                                  Amounts      of Assets                Not Offset in
                                  Offset       Presented               the Statement of
                                  in the       in the               Assets and Liabilities
                     Gross        Statement    Statement     -------------------------------------
                     Amounts of   of Assets    of Assets                   Cash
                     Recognized   and          and           Financial     Collateral    Net
Description          Assets       Liabilities  Liabilities   Instruments   Received      Amount
--------------------------------------------------------------------------------------------------
                                                                       
Swap contracts       $774,015     $   --       $774,015      $--           $(238,617)    $535,398
--------------------------------------------------------------------------------------------------
                     $774,015     $   --       $774,015      $--           $(238,617)    $535,398
==================================================================================================


--------------------------------------------------------------------------------------------------
Liabilities:
                                               Net
                                  Gross        Amounts                  Gross Amounts
                                  Amounts      of Assets                Not Offset in
                                  Offset       Presented               the Statement of
                                  in the       in the               Assets and Liabilities
                     Gross        Statement    Statement     -------------------------------------
                     Amounts of   of Assets    of Assets                   Cash
                     Recognized   and          and           Financial     Collateral    Net
Description          Liabilities  Liabilities  Liabilities   Instruments   Pledged       Amount
--------------------------------------------------------------------------------------------------
                                                                       
Swap contracts       $      --    $  --        $  --         $  --         $  --         $  --
--------------------------------------------------------------------------------------------------
                     $      --    $  --        $  --         $  --         $  --         $  --
==================================================================================================


9.    Additional Disclosures about Derivative Instruments and Hedging Activities

Values of derivative instruments as of May 31, 2015 were as follows:



------------------------------------------------------------------------------------------------
 Derivatives Not
 Accounted for as                 Asset Derivatives 2015           Liabilities Derivatives 2015
 Hedging Instruments              --------------------------------------------------------------
 Under Accounting                 Statement of Assets              Statement of Assets
 Standards Codification           and Liabilities                  and Liabilities
 (ASC) 815                        Location          Value          Location          Value
------------------------------------------------------------------------------------------------
                                                                         
 Swap contracts                   Net unrealized                   Net unrealized
                                  appreciation on                  depreciation on
                                  swap contracts    $ 774,015      swap contracts    $        --
 Futures contracts                Net unrealized                   Net unrealized
                                  appreciation on                  depreciation on
                                  futures contracts        --      futures contracts   1,161,651
------------------------------------------------------------------------------------------------
  Total                                             $ 774,015                        $ 1,162,211
================================================================================================


               Pioneer International Value Fund | Semiannual Report | 5/31/15 41


The effect of derivative instruments on the Statement of Operations for the six
months ended May 31, 2015 was as follows:



------------------------------------------------------------------------------------------------
Derivatives Not                                                  Realized       Change in
Accounted for as                                                 Gain or        Unrealized
Hedging Instruments                                              (Loss) on      Gain or (Loss)
Under Accounting           Location of Gain or (Loss)            Derivatives    on Derivatives
Standards Codification     on Derivatives Recognized             Recognized     Recognized
(ASC) 815                  in Income                             in Income      in Income
------------------------------------------------------------------------------------------------
                                                                       
Forward foreign            Net realized gain (loss) on forward
 currency contracts        foreign currency contracts            $    11,921
Forward foreign            Change in net unrealized
 currency contracts        appreciation (depreciation) on
                           forward foreign currency contracts                   $     218
Futures contracts          Net realized gain (loss) on
                           futures contracts                     $(2,407,411)
Futures contracts          Change in net unrealized
                           appreciation (depreciation) on
                           futures contracts                                    $(188,545)
Swap contracts             Net realized gain (loss) on
                           swap contracts                        $ 1,848,706
Swap contracts             Change in net unrealized
                           appreciation (depreciation) on
                           swap contracts                                       $ 346,016


10. Change in Independent Registered Public Accounting Firm

The Board of Trustees of the Fund, with the approval and recommendation of the
Audit Committee, appointed Deloitte & Touche LLP to serve as the Trust's
independent registered public accounting firm. Deloitte & Touche LLP replaced
Ernst & Young LLP, which resigned as the Trust's independent registered public
accounting firm, effective upon completion of the audit of the Trust's financial
statements for the fiscal year ended November 30, 2013.

During the periods that Ernst & Young LLP served as the Fund's independent
registered public accounting firm, including the Fund's fiscal years ending
November 30, 2013 and November 30, 2012, Ernst & Young LLP's reports on the
financial statements of the Fund have not contained an adverse opinion or
disclaimer of opinion and have not been qualified or modified as to uncertainty,
audit scope or accounting principles. Further, there have been no disagreements
with Ernst & Young LLP on any matter of accounting principles or practices,
financial statement disclosure, or auditing scope or procedure, which, if not
resolved to the satisfaction of Ernst & Young LLP would have caused Ernst &
Young LLP to make reference to the subject matter of the disagreement in
connection with its report on the financial statements. In addition, there have
been no reportable events of the kind described in Item 304(a)(1)(v) of
Regulation S-K under the Securities Exchange Act of 1934.

42 Pioneer International Value Fund | Semiannual Report | 5/31/15


11. Conversion of Class B Shares

As of the close of business on November 10, 2014 (the "Conversion Date"), all
outstanding Class B shares of the Fund were converted to Class A shares.

12. Additional Information

PIM, the Fund's investment adviser, is currently an indirect, wholly-owned
subsidiary of UniCredit. On April 23, 2015, UniCredit announced that it signed a
preliminary and exclusive agreement with Banco Santander and affiliates of
Warburg Pincus and General Atlantic (the "Private Equity Firms") with respect to
Pioneer Investments ("Pioneer") and Santander Asset Management ("SAM") (the
"Transaction").

The Transaction, as described in the UniCredit announcement, will entail the
establishment of a holding company, with the name Pioneer Investments, to be
owned by UniCredit (50%) and the Private Equity Firms (50% between them). The
holding company will control Pioneer's U.S. operations, including the Adviser.
The holding company also will own 66.7% of Pioneer's and SAM's combined
operations outside the U.S., while Banco Santander will own directly the
remaining 33.3% stake. The completion of the Transaction is subject to the
signing of a definitive agreement, as well as certain regulatory and corporate
approvals, and other conditions.

Under the Investment Company Act of 1940, completion of the Transaction will
cause the Fund's investment advisory agreement with the Adviser to terminate.
In connection with the Transaction, the Fund's Board of Trustees will be asked
to approve a new investment advisory agreement for the Fund. If approved by the
Board, the Fund's new investment advisory agreement will be submitted to the
shareholders of the Fund for their approval.

               Pioneer International Value Fund | Semiannual Report | 5/31/15 43


Trustees, Officers and Service Providers

Trustees                                    Advisory Trustee
Thomas J. Perna, Chairman                   Lorraine H. Monchak*
David R. Bock
Benjamin M. Friedman                        Officers
Margaret B.W. Graham                        Lisa M. Jones, President and Chief
Marguerite A. Piret                           Executive Officer
Fred J. Ricciardi                           Mark E. Bradley, Treasurer and
Kenneth J. Taubes                             Chief Financial Officer
                                            Christopher J. Kelley, Secretary and
                                              Chief Legal Officer

Investment Adviser and Administrator
Pioneer Investment Management, Inc.

Custodian and Sub-Administrator
Brown Brothers Harriman & Co.

Principal Underwriter
Pioneer Funds Distributor, Inc.

Legal Counsel
Morgan, Lewis & Bockius LLP

Shareowner Services and Transfer Agent
Pioneer Investment Management Shareholder Services, Inc.

Proxy Voting Policies and Procedures of the Fund are available without charge,
upon request, by calling our toll free number (1-800-225-6292). Information
regarding how the Fund voted proxies relating to portfolio securities during the
most recent 12-month period ended June 30 is publicly available to shareowners
at us.pioneerinvestments.com. This information is also available on the
Securities and Exchange Commission's web site at www.sec.gov.

*     Ms. Monchak is a non-voting Advisory Trustee.

44 Pioneer International Value Fund | Semiannual Report | 5/31/15


How to Contact Pioneer

We are pleased to offer a variety of convenient ways for you to contact us for
assistance or information.

Call us for:
--------------------------------------------------------------------------------
Account Information, including existing accounts,
new accounts, prospectuses, applications
and service forms                                                 1-800-225-6292

FactFone(SM) for automated fund yields, prices,
account information and transactions                              1-800-225-4321

Retirement plans information                                      1-800-622-0176

Write to us:
--------------------------------------------------------------------------------
PIMSS, Inc.
P.O. Box 55014
Boston, Massachusetts 02205-5014

Our toll-free fax                                                 1-800-225-4240

Our internet e-mail address                   ask.pioneer@pioneerinvestments.com
(for general questions about Pioneer only)

Visit our web site: us.pioneerinvestments.com

This report must be preceded or accompanied by a prospectus.

The Fund files a complete schedule of investments with the Securities and
Exchange Commission for the first and third quarters for each fiscal year on
Form N-Q. Shareholders may view the filed Form N-Q by visiting the Commission's
web site at http://www.sec.gov. The filed form may also be viewed and copied at
the Commission's Public Reference Room in Washington, DC. Information regarding
the operations of the Public Reference Room may be obtained by calling
1-800-SEC-0330.


[LOGO] PIONEER
       Investments(R)

Pioneer Investment Management, Inc.
60 State Street
Boston, MA 02109
us.pioneerinvestments.com


Securities offered through Pioneer Funds Distributor, Inc.
60 State Street, Boston, MA 02109
Underwriter of Pioneer Mutual Funds, Member SIPC
(C) 2015 Pioneer Investments 19390-09-0715


ITEM 2. CODE OF ETHICS.

(a) Disclose whether, as of the end of the period covered by the report, the
registrant has adopted a code of ethics that applies to the registrant's
principal executive officer, principal financial officer, principal accounting
officer or controller, or persons performing similar functions, regardless of
whether these individuals are employed by the registrant or a third party.  If
the registrant has not adopted such a code of ethics, explain why it has not
done so.

The registrant has adopted, as of the end of the period covered by this report,
a code of ethics that applies to the registrant's principal executive officer,
principal financial officer, principal accounting officer and controller.

(b) For purposes of this Item, the term "code of ethics" means written standards
that are reasonably designed to deter wrongdoing and to promote:

        (1) Honest and ethical conduct, including the ethical handling of actual
        or apparent conflicts of interest between personal and professional
        relationships;

        (2) Full, fair, accurate, timely, and understandable disclosure in
        reports and documents that a registrant files with, or submits to, the
        Commission and in other public communications made by the registrant;

        (3) Compliance with applicable governmental laws, rules, and
        regulations;

        (4) The prompt internal reporting of violations of the code to an
        appropriate person or persons identified in the code; and

        (5) Accountability for adherence to the code.

(c) The registrant must briefly describe the nature of any amendment, during the
period covered by the report, to a provision of its code of ethics that applies
to the registrant's principal executive officer, principal financial officer,
principal accounting officer or controller, or persons performing similar
functions, regardless of whether these individuals are employed by the
registrant or a third party, and that relates to any element of the code of
ethics definition enumerated in paragraph (b) of this Item. The registrant must
file a copy of any such amendment as an exhibit pursuant to Item 10(a), unless
the registrant has elected to satisfy paragraph (f) of this Item by posting its
code of ethics on its website pursuant to paragraph (f)(2) of this Item, or by
undertaking to provide its code of ethics to any person without charge, upon
request, pursuant to paragraph (f)(3) of this Item.

The registrant has made no amendments to the code of ethics during the period
covered by this report.

(d) If the registrant has, during the period covered by the report, granted a
waiver, including an implicit waiver, from a provision of the code of ethics to
the registrant's principal executive officer, principal financial officer,
principal accounting officer or controller, or persons performing similar
functions, regardless of whether these individuals are employed by the
registrant or a third party, that relates to one or more of the items set forth
in paragraph (b) of this Item, the registrant must briefly describe the nature
of the waiver, the name of the person to whom the waiver was granted, and the
date of the waiver.

Not applicable.

(e) If the registrant intends to satisfy the disclosure requirement under
paragraph (c) or (d) of this Item regarding an amendment to, or a waiver from,
a provision of its code of ethics that applies to the registrant's principal
executive officer, principal financial officer, principal accounting officer or
controller, or persons performing similar functions and that relates to any
element of the code of ethics definition enumerated in paragraph (b) of this
Item by posting such information on its Internet website, disclose the
registrant's Internet address and such intention.

Not applicable.

(f) The registrant must:

        (1) File with the Commission, pursuant to Item 12(a)(1), a copy of
        its code of ethics that applies to the registrant's principal
        executive officer,principal financial officer, principal accounting
        officer or controller, or persons performing similar functions,
        as an exhibit to its annual
        report on this Form N-CSR (see attachment);

        (2) Post the text of such code of ethics on its Internet website and
        disclose, in its most recent report on this Form N-CSR, its Internet
        address and the fact that it has posted such code of ethics on its
        Internet website; or

        (3) Undertake in its most recent report on this Form N-CSR to provide to
        any person without charge, upon request, a copy of such code of ethics
        and explain the manner in which such request may be made.
	See Item 10(2)

ITEM 3. AUDIT COMMITTEE FINANCIAL EXPERT.

(a) (1)  Disclose that the registrant's board of trustees has determined that
         the registrant either:

    (i)  Has at least one audit committee financial expert serving on its audit
         committee; or

    (ii) Does not have an audit committee financial expert serving on its audit
         committee.

The registrant's Board of Trustees has determined that the registrant has at
least one audit committee financial expert.

    (2) If the registrant provides the disclosure required by paragraph
(a)(1)(i) of this Item, it must disclose the name of the audit committee
financial expert and whether that person is "independent." In order to be
considered "independent" for purposes of this Item, a member of an audit
committee may not, other than in his or her capacity as a member of the audit
committee, the board of trustees, or any other board committee:

    (i)  Accept directly or indirectly any consulting, advisory, or other
         compensatory fee from the issuer; or

    (ii) Be an "interested person" of the investment company as defined in
         Section 2(a)(19) of the Act (15 U.S.C. 80a-2(a)(19)).

Ms. Marguerite A. Piret, an independent trustee, is such an audit committee
financial expert.

    (3) If the registrant provides the disclosure required by paragraph (a)(1)
(ii) of this Item, it must explain why it does not have an audit committee
financial expert.

Not applicable.


ITEM 4. PRINCIPAL ACCOUNTANT FEES AND SERVICES.

(a) Disclose, under the caption AUDIT FEES, the aggregate fees billed for each
of the last two fiscal years for professional services rendered by the principal
accountant for the audit of the registrant's annual financial statements or
services that are normally provided by the accountant in connection with
statutory and regulatory filings or engagements for those fiscal years.

Not applicable.

(b) Disclose, under the caption AUDIT-RELATED FEES, the aggregate fees billed in
each of the last two fiscal years for assurance and related services by the
principal accountant that are reasonably related to the performance of the audit
of the registrant's financial statements and are not reported under
paragraph (a) of this Item. Registrants shall describe the nature of the
services comprising the fees disclosed under this category.

Not applicable.

(c) Disclose, under the caption TAX FEES, the aggregate fees billed in each of
the last two fiscal years for professional services rendered by the principal
accountant for tax compliance, tax advice, and tax planning. Registrants shall
describe the nature of the services comprising the fees disclosed under this
category.

Not applicable.

(d) Disclose, under the caption ALL OTHER FEES, the aggregate fees billed in
each of the last two fiscal years for products and services provided by the
principal accountant, other than the services reported in paragraphs (a) through
(c) of this Item. Registrants shall describe the nature of the services
comprising the fees disclosed under this category.

Not applicable.

(e) (1) Disclose the audit committee's pre-approval policies and procedures
described in paragraph (c)(7) of Rule 2-01 of Regulation S-X.

 PIONEER FUNDS
            APPROVAL OF AUDIT, AUDIT-RELATED, TAX AND OTHER SERVICES
                       PROVIDED BY THE INDEPENDENT AUDITOR

                  SECTION I - POLICY PURPOSE AND APPLICABILITY

The Pioneer Funds recognize the importance of maintaining the independence of
their outside auditors. Maintaining independence is a shared responsibility
involving Pioneer Investment Management, Inc ("PIM"), the audit committee and
the independent auditors.

The Funds recognize that a Fund's independent auditors: 1) possess knowledge of
the Funds, 2) are able to incorporate certain services into the scope of the
audit, thereby avoiding redundant work, cost and disruption of Fund personnel
and processes, and 3) have expertise that has value to the Funds. As a result,
there are situations where it is desirable to use the Fund's independent
auditors for services in addition to the annual audit and where the potential
for conflicts of interests are minimal. Consequently, this policy, which is
intended to comply with Rule 210.2-01(C)(7), sets forth guidelines and
procedures to be followed by the Funds when retaining the independent audit firm
to perform audit, audit-related tax and other services under those
circumstances, while also maintaining independence.

Approval of a service in accordance with this policy for a Fund shall also
constitute approval for any other Fund whose pre-approval is required pursuant
to Rule 210.2-01(c)(7)(ii).

In addition to the procedures set forth in this policy, any non-audit services
that may be provided consistently with Rule 210.2-01 may be approved by the
Audit Committee itself and any pre-approval that may be waived in accordance
with Rule 210.2-01(c)(7)(i)(C) is hereby waived.

Selection of a Fund's independent auditors and their compensation shall be
determined by the Audit Committee and shall not be subject to this policy.



                               SECTION II - POLICY

---------------- -------------------------------- -------------------------------------------------
SERVICE           SERVICE CATEGORY DESCRIPTION      SPECIFIC PRE-APPROVED SERVICE SUBCATEGORIES
CATEGORY
---------------- -------------------------------- -------------------------------------------------
                                            
I.  AUDIT        Services that are directly       o Accounting research assistance
SERVICES         related to performing the        o SEC consultation, registration
                 independent audit of the Funds     statements, and reporting
                                                  o Tax accrual related matters
                                                  o Implementation of new accounting
                                                    standards
                                                  o Compliance letters (e.g. rating agency
                                                    letters)
                                                  o Regulatory reviews and assistance
                                                    regarding financial matters
                                                  o Semi-annual reviews (if requested)
                                                  o Comfort letters for closed end
                                                    offerings
---------------- -------------------------------- -------------------------------------------------
II.              Services which are not           o AICPA attest and agreed-upon procedures
AUDIT-RELATED    prohibited under Rule            o Technology control assessments
SERVICES         210.2-01(C)(4) (the "Rule")      o Financial reporting control assessments
                 and are related extensions of    o Enterprise security architecture
                 the audit services support the     assessment
                 audit, or use the
                 knowledge/expertise gained
                 from the audit procedures as a
                 foundation to complete the
                 project.  In most cases, if
                 the Audit-Related Services are
                 not performed by the Audit
                 firm, the scope of the Audit
                 Services would likely
                 increase.  The Services are
                 typically well-defined and
                 governed by accounting
                 professional standards (AICPA,
                 SEC, etc.)
---------------- -------------------------------- -------------------------------------------------

 ------------------------------------- ------------------------------------
                                    
   AUDIT COMMITTEE APPROVAL POLICY               AUDIT COMMITTEE
                                                REPORTING POLICY
 ------------------------------------- ------------------------------------
                                    
 o "One-time" pre-approval             o A summary of all such
   for the audit period for all          services and related fees
   pre-approved specific service         reported at each regularly
   subcategories.  Approval of the       scheduled Audit Committee
   independent auditors as               meeting.
   auditors for a Fund shall
   constitute pre approval for
   these services.
 ------------------------------------- ------------------------------------
 o "One-time" pre-approval             o A summary of all such
   for the fund fiscal year within       services and related fees
   a specified dollar limit              (including comparison to
   for all pre-approved                  specified dollar limits)
   specific service subcategories        reported quarterly.

 o Specific approval is
   needed to exceed the
   pre-approved dollar limit for
   these services (see general
   Audit Committee approval policy
   below for details on obtaining
   specific approvals)

 o Specific approval is
   needed to use the Fund's
   auditors for Audit-Related
   Services not denoted as
   "pre-approved", or
   to add a specific service
   subcategory as "pre-approved"
 ------------------------------------- ------------------------------------




                     SECTION III - POLICY DETAIL, CONTINUED

----------------------- --------------------------- -----------------------------------------------
   SERVICE CATEGORY          SERVICE CATEGORY        SPECIFIC PRE-APPROVED SERVICE SUBCATEGORIES
                               DESCRIPTION
----------------------- --------------------------- -----------------------------------------------
                                              
III. TAX SERVICES       Services which are not      o Tax planning and support
                        prohibited by the Rule,     o Tax controversy assistance
                        if an officer of the Fund   o Tax compliance, tax returns, excise
                        determines that using the     tax returns and support
                        Fund's auditor to provide   o Tax opinions
                        these services creates
                        significant synergy in
                        the form of efficiency,
                        minimized disruption, or
                        the ability to maintain a
                        desired level of
                        confidentiality.
----------------------- --------------------------- -----------------------------------------------

------------------------------------- -------------------------
  AUDIT COMMITTEE APPROVAL POLICY         AUDIT COMMITTEE
                                          REPORTING POLICY
------------------------------------- -------------------------
------------------------------------- -------------------------
o "One-time" pre-approval             o A summary of
  for the fund fiscal  year             all such services and
  within a specified dollar limit       related fees
  				        (including comparison
  			                to specified dollar
  			                limits) reported
  			                quarterly.

o Specific approval is
  needed to exceed the
  pre-approved dollar limits for
  these services (see general
  Audit Committee approval policy
  below for details on obtaining
  specific approvals)

o Specific approval is
  needed to use the Fund's
  auditors for tax services not
  denoted as pre-approved, or to add a specific
  service subcategory as
  "pre-approved"
------------------------------------- -------------------------




                     SECTION III - POLICY DETAIL, CONTINUED

----------------------- --------------------------- -----------------------------------------------
   SERVICE CATEGORY          SERVICE CATEGORY        SPECIFIC PRE-APPROVED SERVICE SUBCATEGORIES
                               DESCRIPTION
----------------------- --------------------------- -----------------------------------------------
                                              
IV.  OTHER SERVICES     Services which are not      o Business Risk Management support
                        prohibited by the Rule,     o Other control and regulatory
A. SYNERGISTIC,         if an officer of the Fund     compliance projects
UNIQUE QUALIFICATIONS   determines that using the
                        Fund's auditor to provide
                        these services creates
                        significant synergy in
                        the form of efficiency,
                        minimized disruption,
                        the ability to maintain a
                        desired level of
                        confidentiality, or where
                        the Fund's auditors
                        posses unique or superior
                        qualifications to provide
                        these services, resulting
                        in superior value and
                        results for the Fund.
----------------------- --------------------------- -----------------------------------------------

--------------------------------------- ------------------------
    AUDIT COMMITTEE APPROVAL POLICY         AUDIT COMMITTEE
                                            REPORTING POLICY
------------------------------------- --------------------------
                                   
o "One-time" pre-approval             o A summary of
  for the fund fiscal year within       all such services and
  a specified dollar limit              related fees
  			               (including comparison
  			                to specified dollar
  				        limits) reported
                                        quarterly.
o Specific approval is
  needed to exceed the
  pre-approved dollar limits for
  these services (see general
  Audit Committee approval policy
  below for details on obtaining
  specific approvals)

o Specific approval is
  needed to use the Fund's
  auditors for "Synergistic" or
  "Unique Qualifications" Other
  Services not denoted as
  pre-approved to the left, or to
  add a specific service
  subcategory as "pre-approved"
------------------------------------- --------------------------




                     SECTION III - POLICY DETAIL, CONTINUED

----------------------- ------------------------- -----------------------------------------------
   SERVICE CATEGORY         SERVICE CATEGORY        SPECIFIC PROHIBITED SERVICE SUBCATEGORIES
                              DESCRIPTION
----------------------- ------------------------- -----------------------------------------------
                                            
PROHIBITED  SERVICES    Services which result     1. Bookkeeping or other services
                        in the auditors losing       related to the accounting records or
                        independence status          financial statements of the audit
                        under the Rule.              client*
                                                  2. Financial information systems design
                                                     and implementation*
                                                  3. Appraisal or valuation services,
                                                     fairness* opinions, or
                                                     contribution-in-kind reports
                                                  4. Actuarial services (i.e., setting
                                                     actuarial reserves versus actuarial
                                                     audit work)*
                                                  5. Internal audit outsourcing services*
                                                  6. Management functions or human
                                                     resources
                                                  7. Broker or dealer, investment
                                                     advisor, or investment banking services
                                                  8. Legal services and expert services
                                                     unrelated to the audit
                                                  9. Any other service that the Public
                                                     Company Accounting Oversight Board
                                                     determines, by regulation, is
                                                     impermissible
----------------------- ------------------------- -----------------------------------------------

------------------------------------------- ------------------------------
     AUDIT COMMITTEE APPROVAL POLICY               AUDIT COMMITTEE
                                                  REPORTING POLICY
------------------------------------------- ------------------------------
o These services are not to be              o A summary of all
  performed with the exception of the(*)      services and related
  services that may be permitted              fees reported at each
  if they would not be subject to audit       regularly scheduled
  procedures at the audit client (as          Audit Committee meeting
  defined in rule 2-01(f)(4)) level           will serve as continual
  the firm providing the service.             confirmation that has
  				              not provided any
                                              restricted services.
------------------------------------------- ------------------------------

--------------------------------------------------------------------------------
GENERAL AUDIT COMMITTEE APPROVAL POLICY:
o For all projects, the officers of the Funds and the Fund's auditors will each
  make an assessment to determine that any proposed projects will not impair
  independence.

o Potential services will be classified into the four non-restricted service
  categories and the "Approval of Audit, Audit-Related, Tax and Other
  Services" Policy above will be applied. Any services outside the specific
  pre-approved service subcategories set forth above must be specifically
  approved by the Audit Committee.

o At least quarterly, the Audit Committee shall review a report summarizing the
  services by service category, including fees, provided by the Audit firm as
  set forth in the above policy.

--------------------------------------------------------------------------------


    (2) Disclose the percentage of services described in each of paragraphs (b)
   through (d) of this Item that were approved by the audit committee pursuant
   to paragraph (c)(7)(i)(C) of Rule 2-01 of Regulation S-X.

Not applicable.

(f) If greater than 50 percent, disclose the percentage of hours expended on the
principal accountants engagement to audit the registrant's financial statements
for the most recent fiscal year that were attributed to work performed by
persons other than the principal accountant's full-time, permanent employees.

N/A

(g) Disclose the aggregate non-audit fees billed by the registrants accountant
for services rendered to the registrant, and rendered to the registrants
investment adviser (not including any sub-adviser whose role is primarily
portfolio management and is subcontracted with or overseen by another investment
adviser), and any entity controlling, controlled by, or under common control
with the adviser that provides ongoing services to the registrant for each of
the last two fiscal years of the registrant.

Not applicable.

(h) Disclose whether the registrants audit committee of the board of trustees
has considered whether the provision of non-audit services that were rendered to
the registrants investment adviser (not including any subadviser whose role is
primarily portfolio management and is subcontracted with or overseen by another
investment adviser), and any entity controlling, controlled by, or under common
control with the investment adviser that provides ongoing services to the
registrant that were not pre-approved pursuant to paragraph (c)(7)(ii) of
Rule 2-01 of Regulation S-X is compatible with maintaining the principal
accountant's independence.

The Fund's audit committee of the Board of Fundees has
considered whether the provision of non-audit services
that were rendered to the Affiliates (as defined) that were
not pre-approved pursuant to paragraph (c)(7)(ii) of Rule
2-01 of Regulation S-X is compatible with maintaining
the principal accountant's independence.

ITEM 5. AUDIT COMMITTEE OF LISTED REGISTRANTS

(a) If the registrant is a listed issuer as defined in Rule 10A-3
under the Exchange Act (17 CFR 240.10A-3), state whether
or not the registrant has a separately-designated standing
 audit committee established in accordance with Section
3(a)(58)(A) of the Exchange Act (15 U.S.C. 78c(a)(58)(A)).
If the registrant has such a committee, however designated,
identify each committee member. If the entire board of directors
is acting as the registrant's audit committee as specified in
Section 3(a)(58)(B) of the Exchange Act (15 U.S.C. 78c(a)(58)(B)),
so state.

N/A

(b) If applicable, provide the disclosure required by Rule 10A-3(d)
under the Exchange Act (17 CFR 240.10A-3(d)) regarding an exemption
from the listing standards for audit committees.

N/A

ITEM 6. SCHEDULE OF INVESTMENTS.

File Schedule of Investments in securities of unaffiliated issuers
as of the close of the reporting period as set forth in 210.1212
of Regulation S-X [17 CFR 210.12-12], unless the schedule is
included as part of the report to shareholders filed under Item
1 of this Form.

Included in Item 1


ITEM 7. DISCLOSURE OF PROXY VOTING POLICIES AND PROCEDURES FOR
CLOSED-END MANAGEMENT INVESTMENT COMPANIES.

A closed-end management investment company that is filing an annual report on
this Form N-CSR must, unless it invests exclusively in non-voting securities,
describe the policies and procedures that it uses to determine how to vote
proxies relating to portfolio securities, including the procedures that the
company uses when a vote presents a conflict between the interests of its
shareholders, on the one hand, and those of the company's investment adviser;
principal underwriter; or any affiliated person (as defined in Section 2(a)(3)
of the Investment Company Act of 1940 (15 U.S.C. 80a-2(a)(3)) and the rules
thereunder) of the company, its investment adviser, or its principal
underwriter, on the other. Include any policies and procedures of the company's
investment adviser, or any other third party, that the company uses, or that are
used on the company's behalf, to determine how to vote proxies relating to
portfolio securities.

Not applicable to open-end management investment companies.


ITEM 8. PORTFOLIO MANAGERS OF CLOSED-END MANAGEMENT INVESTMENT COMPANIES.

(a) If the registrant is a closed-end management investment company that
is filing an annual report on this Form N-CSR,provide the following
information:
(1) State the name, title, and length of service of the person or persons
employed by or associated with the registrant or an investment adviser
of the registrant who are primarily responsible for the day-to-day management
of the registrant's portfolio ("Portfolio Manager"). Also state each Portfolio
Manager's business experience during the past 5 years.


Not applicable to open-end management investment companies.


ITEM 9. PURCHASES OF EQUITY SECURITIES BY CLOSED-END MANAGEMENT
INVESTMENT COMPANY AND AFFILIATED PURCHASERS.

(a) If the registrant is a closed-end management investment company,
in the following tabular format, provide the information specified in
paragraph (b) of this Item with respect to any purchase made by or on
behalf of the registrant or any affiliated purchaser, as defined in
Rule 10b-18(a)(3) under the Exchange Act (17 CFR 240.10b-18(a)(3)), of
shares or other units of any class of the registrant's equity securities
that is registered by the registrant pursuant to Section 12 of the
Exchange Act (15 U.S.C. 781).

Not applicable to open-end management investment companies.


ITEM 10. SUBMISSION OF MATTERS TO A VOTE OF SECURITY HOLDERS.

Describe any material changes to the procedures by which shareholders
may recommend nominees to the registrant's board of directors, where
those changes were implemented after the registrant last provided
disclosure in response to the requirements of Item 407(c)(2)(iv) of
Regulation S-R(17 CFR 229.407)(as required by Item 22(b)(15))
of Schedule 14A (17 CFR 240.14a-101), or this Item.


There have been no material changes to the procedures by which the
shareholders may recommend nominees to the registrant's board of
directors since the registrant last provided disclosure in response
to the requirements of Item 407(c)(2)(iv) of Regulation S-R of Schedule 14(A)
in its definitive proxy statement, or this item.


ITEM 11. CONTROLS AND PROCEDURES.

(a) Disclose the conclusions of the registrant's principal executive and
principal financials officers, or persons performing similar functions,
regarding the effectiveness of the registrant's disclosure
controls and procedures (as defined in Rule 30a-3(c) under the Act (17 CFR
270.30a-3(c))) as of a date within 90 days of the filing date of the report
that includes the disclosure required by this paragraph,
based on the evaluation of these controls and procedures required by Rule
30a-3(b) under the Act (17 CFR 270.30(a)-3(b) and Rules 13a-15(b) or 15d-15(b)
under the Exchange Act (17 CFR 240.13a-15(b) or 240.15d-15(b)).

The registrant's principal executive officer
and principal financial officer have
concluded that the registrant's disclosure
controls and procedures are effective based
on the evaluation of these controls and
procedures as of a date within 90 days of the
filing date of this report.


(b) Disclose any change in the registrant's internal control over financial
reporting (as defined in Rule 30a-3(d) under the Act (17CFR 270.30a-3(d)) that
occured during the second fiscal quarter of the period covered by this report
that has materially affected, or is reasonably likely to materially affect,
the registrant's internal control over financial reporting.

There were no significant changes in the
registrant's internal control over financial
reporting that occurred during the second
fiscal quarter of the period covered by this
report that have materially affected, or are
reasonably likely to materially affect, the
registrant's internal control over financial
reporting.

The registrant's principal executive officer and principal financial
officer, however, voluntarily are reporting the following information:

In August of 2006 the registrant's investment adviser
enhanced its internal procedures for reporting performance
information required to be included in prospectuses.
Those enhancements involved additional internal controls
over the appropriateness of performance data
generated for this purpose.  Such enhancements were made
following an internal review which identified
prospectuses relating to certain classes of shares of
a limited number of registrants where, inadvertently,
performance information not reflecting the deduction of
applicable sales charges was included. Those prospectuses
were revised, and the revised prospectuses were distributed to
shareholders.


ITEM 12. EXHIBITS.

(a) File the exhibits listed below as part of this Form. Letter or number the
exhibits in the sequence indicated.

(1) Any code of ethics, or amendment thereto, that is the subject of the
disclosure required by Item 2, to the extent that the registrant intends to
satisfy the Item 2 requirements through filing of an exhibit.



(2) A separate certification for each principal executive officer and principal
financial officer of the registrant as required by Rule 30a-2(a) under the Act
(17 CFR 270.30a-2(a)) , exactly as set forth below:

Filed herewith.





                                   SIGNATURES

                          [See General Instruction F]


Pursuant to the requirements of the Securities Exchange Act of 1934 and the
Investment Company Act of 1940, the registrant has duly caused this report to be
signed on its behalf by the undersigned, thereunto duly authorized.


(Registrant) Pioneer Series Trust VIII


By (Signature and Title)* /s/ Lisa M. Jones
Lisa M. Jones, President & Chief Executive Officer

Date July 29, 2015


Pursuant to the requirements of the Securities Exchange Act of 1934 and the
Investment Company Act of 1940, this report has been signed below by the
following persons on behalf of the registrant and in the capacities and on the
dates indicated.


By (Signature and Title)* /s/ Lisa M. Jones
Lisa M. Jones, President & Chief Executive Officer

Date July 29, 2015


By (Signature and Title)* /s/ Mark Bradley
Mark Bradley, Treasurer & Chief Accounting & Financial Officer

Date July 29, 2015

* Print the name and title of each signing officer under his or her signature.