BINGHAM McCUTCHEN LLP
                              ONE FEDERAL STREET
                          BOSTON, MASSACHUSETTS 02110

                                     January 10, 2014

VIA EDGAR
--- -----

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

Re:  Pioneer Series Trust V (File Nos. 333-129005; 811-21823)
     Registration Statement on Form N-1A

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. 18 to the Registration Statement on Form N-1A of Pioneer Series Trust V
(the "Registrant") relating to Pioneer Absolute Return Bond 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 Fund's Prospectus

A. Fees and Expenses

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, and that any
             expenses related to investments in other investment companies are
             reflected in the Other Expenses line item.

  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, and that estimated expenses related
             to investments in other investment companies are reflected in the
             Other Expenses line item.

2. Comment:  The Staff noted that the Registrant states that, with respect to
             the expense limitation arrangement for the Fund, the arrangement
             may be terminated for a class only by





          
             agreement of the adviser and the Board of Trustees. The
             Staff requested that the Registrant confirm in its response
             that the Board of Trustees does not intend to terminate the
             arrangement during the term indicated in the prospectus.

  Response:  The Registrant confirms that it has not been informed that
             the Board of Trustees intends to terminate the contractual
             expense limitation arrangement with respect to the Fund
             during the term indicated in the prospectus.

B. Principal Investment Strategies

1. Comment:  The Staff requested that the Registrant revise the
             disclosure to clarify the extent to which the Fund may
             invest across market capitalization ranges, industries and
             market sectors. The Staff noted that to the extent the Fund
             intends to focus on a particular market capitalization
             range, industry or market sector, the Fund should identify
             that focus and add appropriate risk disclosure.

  Response:  The Registrant has revised the disclosure to address the
             Staff's comment.

2. Comment:  The Staff suggested that the Registrant consider revising
             the disclosure regarding duration to state:

                    "For example, if the Fund has a positive three year
                    duration, then, all other things being equal, the
                    Fund will decrease in value by three percent if
                    interest rates rise one percent, and increase in
                    value by three percent if interest rates fall by one
                    percent. In contrast, if the Fund has a negative
                    three year duration, then, all other things being
                    equal, the Fund will increase in value by three
                    percent if interest rates rise one percent and
                    decrease in value by three percent if interest rates
                    fall one percent."

  Response:  The Registrant has revised the disclosure to address the
             Staff's comment.

3. Comment:  The Staff suggested that the Registrant consider adding
             disclosure to explain the difference between maturity and
             duration.

  Response:  The Registrant has added disclosure to address the Staff's
             comment.

4. 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 a material percentage 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 a
             material percentage 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.

5. Comment:  The Staff suggested that the Registrant consider adding a
             separate risk factor pertaining to the Fund's investments
             in synthetic collateralized debt obligations.

  Response:  The Registrant has added disclosure to address the Staff's
             comment.





             
C. Related Account Performance

1. Comment:     The Staff provided the following comments with respect to the
                disclosure in the section titled "Related Account Performance:"

   a.           The Staff noted that in the disclosure regarding related account
                performance, the Registrant states that "the Luxembourg UCITS Fund
                is the only account managed by Pioneer with investment objectives,
                policies, strategies and restrictions substantially similar to
                those of the Fund." The Staff requested that the Registrant
                (i) delete the phrase "and restrictions" from the disclosure to be
                consistent with the Staff's no-action letter to Nicholas-Applegate
                Mutual Funds (pub. Avail. August 6, 1996); (ii) revise the
                disclosure to clarify that the Luxembourg UCITS Fund is the only
                account or fund managed by Pioneer with investment objectives,
                policies and strategies substantially similar to those of the
                Fund; and (iii) confirm in its response that there are no other
                accounts or funds managed by Pioneer with investment objectives,
                policies and strategies substantially similar to those of the Fund.

   b.           The Staff requested that, to the extent that the Luxembourg UCITS
                Fund's performance information shown in the prospectus is not
                calculated using the standard methods of computation prescribed by
                the Securities and Exchange Commission, the Registrant disclose
                how such performance information was calculated.

   c.           The Staff requested that the Registrant identify the inception
                date of the Luxembourg UCITS Fund's performance information.

   d.           The Staff requested that the Registrant add disclosure (i) stating
                that the Luxembourg UCITS Fund's performance information reflects
                the deduction of all actual fees and expenses that were charged to
                the Luxembourg UCITS Fund, (ii) indicating whether such actual
                fees and expenses were higher or lower than the Fund's fees and
                expenses, and (iii) if the Luxembourg UCITS Fund's fees and
                expenses were lower than the Fund's fees and expenses, stating
                that the Luxembourg UCITS Fund's performance would have been lower
                than that shown if it had been subject to the fees and expenses of
                the Fund.

   e.           The Staff requested that the Registrant add a prominent statement
                in all caps or bold immediately prior to the average annual total
                returns table for the Luxembourg UCITS Fund stating that "the
                following is not the performance of Pioneer Absolute Return Bond
                Fund."

   f.           The Staff requested that the Registrant identify the benchmark
                index to which the Luxembourg UCITS Fund's performance will be
                compared and indicate in the Registrant's response letter why it
                is appropriate to compare the Luxembourg UCITS Fund's performance
                to such benchmark index.

  Response:     After further analysis, the Registrant has determined that neither
                the Luxembourg UCITS Fund nor any other account or fund managed by
                Pioneer has investment objectives, policies and strategies that
                are substantially similar to those of the Fund. Accordingly, the
                Registrant has deleted the disclosure referenced by the Staff.




       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