BINGHAM McCUTCHEN LLP
                               ONE FEDERAL STREET
                          BOSTON, MASSACHUSETTS 02110

                                     December 7, 2012

VIA EDGAR

Securities and Exchange Commission
Division of Investment Management
100 F Street, NE
Washington, D.C. 20549

Re:  Pioneer Series Trust VII
     Registration Statement on Form N-1A
     (File Nos. 333-62166; 811-10395)

Ladies and Gentlemen:

     This letter is to respond to comments we received from Mr. Dominic Minore
of the Staff of the Division of Investment Management of the Securities and
Exchange Commission (the "Commission") regarding Post-Effective Amendment No. 21
to the Registration Statement on Form N-1A for Pioneer Series Trust VII (the
"Registrant") relating to Pioneer Emerging Markets Local Currency Debt Fund (the
"Fund"). Following are the Staff's comments and the Registrant's responses
thereto:

I. GENERAL COMMENT

1.  COMMENT:  The Staff asked that the Registrant provide a letter to the
              Commission that includes certain "Tandy" acknowledgments with the
              Registrant's response to the Staff's comments.

    RESPONSE: A Tandy representation letter executed in connection with the
              filing of this response is attached hereto as Exhibit A.

II. COMMENTS  APPLICABLE TO THE PROSPECTUS

A. FEES AND EXPENSES OF THE FUND

1.  COMMENT:  The Staff requested that the Registrant confirm that the Fund does
              not intend to invest in other investment companies to the extent
              that Acquired Fund Fees and Expenses will represent 0.01% or more
              of the Fund's expenses during the next twelve months.

    RESPONSE: The Registrant confirms that the Fund does not intend to invest in
              other investment companies to the extent that Acquired Fund Fees
              and Expenses will represent 0.01% or more of the Fund's expenses
              during the next twelve months.




2.  COMMENT:  The Staff requested that the Registrant file the Expense Limit
              Agreement with respect to the Fund referenced in Footnote 2 to the
              Fee Table as an exhibit to the next Post-Effective Amendment to
              the Registrant's Registration Statement relating to the Fund.

    RESPONSE: The Registrant confirms that it will file the Expense Limit
              Agreement with respect to the Fund referenced in Footnote 2 to the
              Fee Table as an exhibit to the next Post-Effective Amendment to
              the Registrant's Registration Statement relating to the Fund.

3.  COMMENT:  The Staff requested that the Registrant confirm in its response to
              the Staff's comments that neither Pioneer nor the Board of
              Trustees intends to terminate the Expense Limit Agreement with
              respect to the Fund during the next twelve months.

    RESPONSE: The Registrant confirms that neither Pioneer nor the Board of
              Trustees intends to terminate the Expense Limit Agreement with
              respect to the Fund during the next twelve months.

B.  PRINCIPAL INVESTMENT STRATEGIES

1.  The Staff noted that the Registrant states that the Fund may invest in
    debt securities denominated in emerging market currencies, and that debt
    securities may include "instruments and obligations of governmental and
    government-related entities, including supranational organizations and
    those of corporate and other non-governmental entities."

a.  COMMENT:  The Staff requested that the Registrant identify each principal
              category of "instruments" in which the Fund intends to invest.

    RESPONSE: The Registrant notes that it provides substantial disclosure
              regarding the debt securities in which the Fund may invest and
              that additional disclosure would not be useful to shareholders.
              Accordingly, the Registrant respectfully submits that no
              additional disclosure is required.

b.  COMMENT:  The Staff requested that the Registrant clarify what it means by
              "government-related entities."

    RESPONSE: The Registrant has revised the disclosure to clarify that
              government-related entities include government agencies and
              instrumentalities, and supranational organizations.

c.  COMMENT:  The Staff requested that the Registrant clarify the parameters,
              if any, with respect to the Fund's investment in debt securities,
              including with respect to the market capitalization and/or credit
              quality of issuers.

    RESPONSE: The Registrant has added disclosure to clarify that the Fund may
              invest in debt securities of issuers of any market capitalization.
              The Registrant notes that it currently discloses that the Fund may
              invest in debt securities of any credit quality.

2.  COMMENT:  The Staff requested that the Registrant clarify why it states
              that the Fund invests a substantial portion of its assets in debt
              securities issued by emerging market governments and government
              agencies "due to the current market for debt securities
              denominated in emerging market currencies." The Staff asked the
              Registrant to clarify if it expected the "current market" to last
              indefinitely.

                                       2




    RESPONSE: The Registrant has deleted the disclosure referenced by the Staff.

3.  COMMENT:  The Staff requested that the Registrant identify each principal
              category of "instruments" to which it refers in the statement that
              the Fund may invest in "index-linked and inflation-linked
              securities and other fixed income securities or instruments that
              provide exposure to debt securities denominated in emerging market
              currencies, in addition to conventional debt securities, as well
              as loans."

    RESPONSE: The Registrant notes that it provides substantial disclosure
              regarding the securities in which the Fund may invest and that
              additional disclosure would not be useful to shareholders.
              Accordingly, the Registrant respectfully submits that no
              additional disclosure is required.

4.  COMMENT:  The Staff noted that the Registrant states that the Fund may
              invest in zero coupon securities and payment-in-kind securities,
              and requested that the Registrant expand on the tax risks related
              to the interest payments on such investments.

    RESPONSE: The  Registrant  has  added disclosure to address the Staff's
              request.

5.  The Staff noted that the Registrant states that the Fund may "hold
    non-U.S. currencies and purchase and sell forward currency exchange
    contracts in non-U.S. currencies. The Fund's currency and currency-related
    investments may be used to adjust overall currency exposures, including as
    a means of seeking incremental return."

a.  COMMENT:  The Staff requested that the Registrant clarify whether such
              investments will be used to satisfy the requirement that the Fund
              invest at least 80% of its net assets in debt securities
              denominated in emerging market currencies. To the extent the Fund
              uses such investments to satisfy its 80% test, the Staff
              requested that the Registrant disclose that the Fund will use the
              market value of such investments, rather than the notional value,
              for purposes of determining that the 80% test has been met.

    RESPONSE: [LET'S DISCUSS/CONFIRM.]  The Registrant has added disclosure
              to address the Staff's request.

b.  COMMENT:  The Staff requested that, to the extent that forward currency
              exchange contracts and other derivatives utilized by the Fund
              have a leveraging effect on the Fund's exposure to specific
              investment opportunities, the Registrant disclose that the Fund's
              exposure to such investments may be several times the Fund's
              assets and therefore may result in greater price volatility to
              the Fund.

    RESPONSE: The Registrant has added disclosure with respect to the Staff's
              request.

c.  COMMENT:  The Staff requested that, to the extent that use of forward
              currency exchange contracts and other derivatives is a principal
              investment strategy of the Fund, the Registrant add disclosure to
              the prospectus stating that the Fund will segregate assets to
              maintain asset coverage for such derivative positions that have a
              leveraging effect on the Fund's portfolio.

    RESPONSE: The Registrant has added disclosure with respect to the Staff's
              request.

                                       3




d.  COMMENT:  The Staff requested that the Registrant revise in plain English
              the statement that the Fund may use such investments "as a means
              of seeking incremental return" and clarify whether the Fund may
              use such investments for speculative purposes.

    RESPONSE: The Registrant respectfully submits that the disclosure referenced
              by the Staff currently is in plain English and that no change to
              the disclosure is required. The Registrant notes that it has
              revised the disclosure to clarify that the Fund's use of currency
              and currency-related investments as a means of seeking
              incremental return may be considered a speculative technique.

6.  COMMENT:  The Staff requested that the Registrant confirm in its response
              to the Staff's comments that the disclosure in the prospectus
              regarding the Fund's use of derivatives addresses the
              considerations noted in the letter from Barry D. Miller,
              Associate Director, Division of Investment Management, SEC to
              Karrie McMillan, General Counsel, ICI (July 30, 2010) regarding
              derivatives related disclosure by investment companies.

    RESPONSE: The Registrant confirms that the disclosure in the prospectus
              regarding the Fund's use of derivatives addresses the
              considerations noted in the letter from the Division of
              Investment Management to the Investment Company Institute
              regarding derivatives-related disclosure by investment companies.

C.  PRINCIPAL RISKS OF INVESTING IN THE FUND

1.  COMMENT:  The Staff requested that the Registrant consider adding to the
              disclosure regarding "Risks of Non-U.S. Investments" in the
              summary section of the prospectus that less information about
              non-U.S. issuers or markets may be available and that withholding
              and other non-U.S. taxes may decrease the Fund's return.

    RESPONSE: The Registrant has added disclosure to address the Staff's
              request.

2.  COMMENT:  The Staff requested that the Registrant include an undertaking in
              its response to the Staff's comments that, to the extent that the
              Fund's investments in any one region or country represent more
              than 25% of the Fund's assets, the Registrant will supplement the
              Fund's prospectus to disclose the specific risks of investing in
              such region or country.

    RESPONSE: The Registrant undertakes that, to the extent that the Fund's
              investments in any one region or country represent more than 25%
              of the Fund's assets, the Registrant will supplement the Fund's
              prospectus to disclose the specific risks of investing in such
              region or country.

3.  COMMENT:  The Staff noted that the Registrant's disclosure regarding
              "Leveraging Risk" states that "the value of your investment may
              be more volatile and other risks tend to be compounded if the
              Fund borrows or uses derivatives or other investments, such as
              ETFs, that have embedded leverage." The Staff asked if the Fund's
              use of borrowing or its investments in ETFs are principal
              investment strategies of the Fund and, if so, to expand the
              principal strategy and risk disclosure with respect to the Fund's
              use of borrowing and investments in ETFs.

    RESPONSE: The Registrant confirms that neither the Fund's use of borrowing
              nor its investments in ETFs are principal investment strategies of
              the Fund. The Registrant notes that the references to borrowing
              and to ETFs are included in the disclosure referenced by the

                                       4




              Staff as examples of investment practices that may result in
              leverage rather than as references to specific principal
              investment strategies. Accordingly, the Registrant respectfully
              submits that no additional disclosure is required.

4.  COMMENT:  The Staff requested that the Registrant revise the last sentence
              of the "Principal Investment Risks" section to state that "there
              are many other NON-PRINCIPAL factors that could adversely affect
              your investment and that could prevent the Fund from achieving
              its goals" or expand the disclosure in this section to address
              any other principal risks of investing in the Fund.

    RESPONSE: The Registrant notes that it currently discloses the principal
              risks of investing in the Fund in the Fund summary. The
              Registrant further notes that the disclosure referenced by the
              Staff does not suggest that the "other factors" referred to in
              such disclosure are principal risks. The Registrant respectfully
              submits that the additional disclosure suggested by the Staff
              would not be helpful to investors, and, accordingly, that no
              additional disclosure is required.

D.  TAX INFORMATION

1.  COMMENT:  The Staff noted that the Registrant states that "you normally will
              have to pay income taxes on the dividends and capital gain
              distributions you receive from the Fund, unless you are investing
              through a tax-deferred account, such as a 401(k) plan or
              individual retirement account." The Staff requested that the
              Registrant revise the disclosure to clarify that an investor
              normally will pay taxes on dividends and capital gain
              distributions when such distributions are withdrawn from such
              tax-deferred accounts.

    RESPONSE: The Registrant has revised the disclosure referenced by the
              Staff to state that the Fund intends to make distributions that
              may be taxed as ordinary income or capital gains, tracking the
              language provided in Item 7 of Form N-1A.

E.  MORE ON THE FUND'S INVESTMENT OBJECTIVE AND STRATEGIES

1.  COMMENT:  The Staff noted that the Registrant states that the Fund's
              investment objective may be changed without shareholder approval
              and that the Fund will provide notice prior to implementing any
              change to its investment objective. The Staff requested that the
              Registrant disclose the amount of advance notice the Fund will
              provide to shareholders before changing its investment objective.

    RESPONSE: The Registrant has added disclosure to address the Staff's
              request.

2.  COMMENT:  The Staff requested that the Registrant revise the disclosure
              regarding "Cash Management and Temporary Investments" to indicate
              that the Fund may be prevented from achieving its investment
              objective when the Fund takes temporary defensive positions.

    RESPONSE: The Registrant has added disclosure to address the Staff's
              request.

                                       5




F.  INVESTMENT ADVISER

1.  COMMENT:  The Staff requested that the Registrant delete the statement
              that, to the extent that the Commission adopts a rule that would
              supersede the Fund's manager-of-managers exemptive order, or
              would provide greater flexibility than the order, Pioneer and the
              Fund intend to rely on such rule. The Staff noted that such
              statement is speculative and that the Commission has no current
              plans to adopt such a rule.

    RESPONSE: The Registrant has deleted the disclosure referenced by the Staff.

G.  NET ASSET VALUE

1.  COMMENT:  The Staff requested that the Registrant delete the references to
              the valuation of senior loans in the "Net Asset Value" section of
              the prospectus since the Registrant does not discuss investments
              in senior loans in the "Principal Investment Strategies" section.

    RESPONSE: The Registrant notes that it states in the "Principal Investment
              Strategies" section that the debt securities in which the Fund
              may invest include loans. Accordingly, the Registrant respectfully
              submits that no change to the disclosure is required.

H.  CONCENTRATION POLICY

1.  COMMENT:  The Staff noted that the Registrant states that "except as
              permitted by exemptive or other relief or permission from the
              SEC, SEC Staff or other authority of competent jurisdiction, the
              Fund may not make any investment if, as a result, the Fund's
              investments will be concentrated in any one industry." The Staff
              noted that, in its view, the Fund's formulation of its
              concentration policy reserves the Fund's freedom of action to
              concentrate in an industry, and that reserving the right to
              concentrate in a particular industry or group of industries
              without limitation is prohibited by Section 8(b)(1) of the 1940
              Act. The Staff requested that the Registrant revise the Fund's
              concentration policy so as not to reserve the Fund's freedom of
              action to concentrate in an industry.

    RESPONSE: The Registrant acknowledges the Staff's comment. The Registrant
              notes that, as currently formulated, the concentration policy
              provides that the Fund may not make any investment if, as a
              result, the Fund's investments will be concentrated in any
              industry unless the SEC, SEC Staff or other authority of
              competent jurisdiction permits the Fund to do so. Thus, it is the
              Registrant's understanding that the Fund does not itself have the
              freedom to make any such investment unless the SEC, SEC Staff or
              other authority take affirmative action to permit such
              investment. Accordingly, the Staff respectfully submits that no
              change to the Fund's concentration policy is required.

2.  COMMENT:  The Staff requested that the Registrant revise the disclosure
              regarding tax-exempt funds that invest 80% of their assets in
              tax-exempt securities to clarify that such funds will characterize
              investments in revenue bonds by the types of projects from which
              such revenue is derived.

    RESPONSE: The Registrant has added disclosure to address the Staff's
              request.

                                       6




3.  COMMENT:  The Staff noted that the Registrant states that "when identifying
              industries for purposes of its concentration policy, the Fund may
              rely upon available industry classifications. As of the date of
              the SAI, the Fund relies on the MSCI Global Industry
              Classification Standard (GICS) classifications, or with respect
              to certain securities, another third-party classification system.
              Exchange-traded funds may be classified based on the underlying
              securities." The Staff requested that the Registrant specify the
              "certain securities" and the "third-party classification system"
              that will be used, and also specify the classification system
              that will be used on the underlying securities of exchange-traded
              funds.

    RESPONSE: The Registrant has added disclosure to address the Staff's
              request.

     Please call the undersigned at (617) 951-8458 or Toby Serkin at (617)
951-8760 with any questions.

                                      Sincerely,

                                      /s/ Jeremy Kantrowitz
                                      ---------------------
                                      Jeremy Kantrowitz

cc:  Terrence J. Cullen
     Christopher J. Kelley
     Roger P. Joseph
     Toby R. Serkin

                                       7




                                                                       Exhibit A

                            PIONEER SERIES TRUST VII
                                60 State Street
                          Boston, Massachusetts 02110

                                     December 7, 2012

VIA EDGAR

Securities and Exchange Commission
Division of Investment Management
100 F Street, NE
Washington, D.C. 20549

     Re:   Pioneer Series Trust VII
           Registration Statement on Form N-1A
           (File Nos. 333-62166; 811-10395)

Ladies and Gentlemen:

     In connection with the review by the Staff of the Securities and Exchange
Commission (the "Commission") of Post-Effective Amendment No. 21 to the
Registration Statement on Form N-1A of Pioneer Series Trust VII (the
"Registrant"), filed on September 28, 2012 with respect to its series Pioneer
Emerging Markets Local Currency Debt Fund, the Registrant acknowledges that,
with respect to filings made by the Registrant with the Commission and reviewed
by the Staff:

   (a)  the Registrant is responsible for the adequacy and accuracy of the
        disclosure in the filings;

   (b)  Staff comments or changes to disclosure in response to Staff comments
        in the filings reviewed by the Staff do not foreclose the Commission
        from taking any action with respect to the filings; and

   (c)  the Registrant may not assert Staff comments as a defense in any
        proceeding initiated by the Commission or any person under the federal
        securities laws of the United States.

                                        Sincerely,

                                        Pioneer Series Trust VII

                                        By: /s/ Christopher J. Kelley
                                            ---------------------------
                                            Name:  Christopher J. Kelley
                                            Title: Secretary