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

                                    FORM N-PX
               ANNUAL REPORT OF PROXY VOTING RECORD OF REGISTERED
                         MANAGEMENT INVESTMENT COMPANIES

                  Investment Company Act file number 811-21043
                                      -----

Pioneer High Income Trust
----------------------------------------------------
(Exact name of registrant as specified in charter)

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

Terrence J. Cullen
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:  March 31

Date of reporting period:  July 1, 2009 to June 30, 2010

SIGNATURES

Pursuant to the requirements of 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 High Income Trust

By (Signature and Title)  /s/ John F. Cogan, Jr.
                         -------------------------
                         John F. Cogan, Jr., Chairman and President

Date  August 19, 2010
      ----------------


========================== PIONEER HIGH INCOME TRUST ===========================


ALERIS INTERNATIONAL INC

Ticker:                      Security ID:  014477AG8
Meeting Date: APR 29, 2010   Meeting Type: Written Consent
Record Date:  MAR 10, 2010

#     Proposal                                Mgt Rec   Vote Cast    Sponsor
1     The Plan                                None      For          Management


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ARCO CHEMICAL CO.

Ticker:       RCM            Security ID:  001920AB3
Meeting Date: APR 15, 2010   Meeting Type: Written Consent
Record Date:  MAR 12, 2010

#     Proposal                                Mgt Rec   Vote Cast    Sponsor
1     The Plan                                None      For          Management
2     I Am A Qualified Investor               None      For          Management


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DELTA AIR LINES, INC.

Ticker:       DAL            Security ID:  247361702
Meeting Date: JUN 30, 2010   Meeting Type: Annual
Record Date:  MAY 3, 2010

#     Proposal                                Mgt Rec   Vote Cast    Sponsor
1     Elect Director Richard H. Anderson      For       For          Management
2     Elect Director Edward H. Bastian        For       For          Management
3     Elect Director Roy J. Bostock           For       For          Management
4     Elect Director John S. Brinzo           For       For          Management
5     Elect Director Daniel A. Carp           For       For          Management
6     Elect Director John M. Engler           For       For          Management
7     Elect Director Mickey P. Foret          For       For          Management
8     Elect Director David R. Goode           For       For          Management
9     Elect Director Paula Rosput Reynolds    For       For          Management
10    Elect Director Kenneth C. Rogers        For       For          Management
11    Elect Director Rodney E. Slater         For       For          Management
12    Elect Director Douglas M. Steenland     For       For          Management
13    Elect Director Kenneth B. Woodrow       For       For          Management
14    Ratify Auditors                         For       For          Management
15    Provide for Cumulative Voting           Against   For          Shareholder


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GEORGIA GULF CORPORATION

Ticker:       GGC            Security ID:  373200302
Meeting Date: MAY 18, 2010   Meeting Type: Annual
Record Date:  MAR 26, 2010

#     Proposal                                Mgt Rec   Vote Cast    Sponsor
1.1   Elect Director Mark L. Noetzel          For       For          Management
1.2   Elect Director Stephen E. Macadam       For       For          Management
1.3   Elect Director David N. Weinstein       For       For          Management
2     Adopt Majority Voting for Uncontested   For       For          Management
      Election of Directors
3     Declassify the Board of Directors       For       For          Management
4     Reduce Supermajority Vote Requirement   For       For          Management
5     Ratify Auditors                         For       For          Management


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LEAR CORPORATION

Ticker:       LEA            Security ID:  521865204
Meeting Date: MAY 13, 2010   Meeting Type: Annual
Record Date:  MAR 22, 2010

#     Proposal                                Mgt Rec   Vote Cast    Sponsor
1     Ratify Auditors                         For       For          Management


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NEXUS FLOATING PRODUCTION LTD.

Ticker:       NEXUS          Security ID:  Y6265HAA0
Meeting Date: JUL 3, 2009    Meeting Type: Bondholder
Record Date:

#     Proposal                                Mgt Rec   Vote Cast    Sponsor
1     Approve Summons                         For       For          Management
2     Approve Agenda                          For       For          Management
3     Approve Election of Two Bondholders to  For       For          Management
      Sign Minutes Together with the
      Chairperson
4     Approve Change of the Loan Agreement    For       For          Management


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NEXUS FLOATING PRODUCTION LTD.

Ticker:       NEXUS          Security ID:  Y6265HAA0
Meeting Date: JUL 29, 2009   Meeting Type: Bondholder
Record Date:

#     Proposal                                Mgt Rec   Vote Cast    Sponsor
1     Approve Summons                         For       For          Management
2     Approve Agenda                          For       For          Management
3     Approve Election of Two Bondholders to  For       For          Management
      Sign Minutes Together with the
      Chairperson
4     Approve Request for Change of the Loan  For       For          Management
      Agreement


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NEXUS FLOATING PRODUCTION LTD.

Ticker:       NEXUS          Security ID:  Y6265HAA0
Meeting Date: AUG 24, 2009   Meeting Type: Bondholder
Record Date:

#     Proposal                                Mgt Rec   Vote Cast    Sponsor
1     Approve Summons                         For       For          Management
2     Approve Agenda                          For       For          Management
3     Approve Election of Two Bondholders to  For       For          Management
      Sign the Minutes Together With the
      Chairperson
4     Approve Request for Change of the Bond  For       For          Management
      Loan Agreement


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NEXUS FLOATING PRODUCTION LTD.

Ticker:       NEXUS          Security ID:  Y6265HAA0
Meeting Date: NOV 11, 2009   Meeting Type: Bondholder
Record Date:

#     Proposal                                Mgt Rec   Vote Cast    Sponsor
1     Approve Summons                         For       For          Management
2     Approve Agenda                          For       For          Management
3     Approve Election of Two Bondholders to  For       For          Management
      Sign the Minutes Together With the
      Chairperson
4     Approve Restructuring and Changes to    For       For          Management
      the Bond Loan Agreements


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NORSE ENERGY CORP. ASA (FRMLY NORTHERN OIL ASA)

Ticker:       NEC            Security ID:  R5S42TAA4
Meeting Date: DEC 17, 2009   Meeting Type: Bondholder
Record Date:

#     Proposal                                Mgt Rec   Vote Cast    Sponsor
1     Approval of the Summons of the Meeting  For       For          Management
2     Approve Agenda of Meeting               For       For          Management
3     Designate Inspector(s) of Minutes of    For       For          Management
      Meeting
4     Amend Loan Agreement Re: Revised        For       For          Management
      Maturity Dates, Revised Interest Rates,
      Introduction of Call Options


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PANOLAM INDUSTRIES INTERNATIONAL, INC.

Ticker:                      Security ID:  698604AG0
Meeting Date: NOV 2, 2009    Meeting Type: Written Consent
Record Date:  SEP 25, 2009

#     Proposal                                Mgt Rec   Vote Cast    Sponsor
1     The Plan                                For       For          Management


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PETROJACK ASA

Ticker:       PTRJK          Security ID:  R6961BAC4
Meeting Date: APR 16, 2010   Meeting Type: Bondholder
Record Date:  MAR 17, 2010

#     Proposal                                Mgt Rec   Vote Cast    Sponsor
1     Approve Summons                         For       For          Management
2     Approve Agenda                          For       For          Management
3     Elect Minutes Keepers                   For       For          Management
4     Approve Sale and Disposal of Rig        For       For          Management
      Assets; Approve Amendments to the Bond
      Loan Agreement


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PETROPROD LTD

Ticker:       PPROD          Security ID:  G7053QAA4
Meeting Date: DEC 23, 2009   Meeting Type: Bondholder
Record Date:  DEC 9, 2009

#     Proposal                                Mgt Rec   Vote Cast    Sponsor
1     Approval of Summons                     For       For          Management
2     Approval of the Agenda                  For       For          Management
3     Election of Two Persons to Sign the     For       For          Management
      Minutes with the Chairman
4     Consent to Certain Proposals            For       For          Management


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SKEIE DRILLING & PRODUCTION ASA

Ticker:       SKDP           Security ID:  R7034SAB0
Meeting Date: JUL 15, 2009   Meeting Type: Bondholder
Record Date:

#     Proposal                                Mgt Rec   Vote Cast    Sponsor
1     Approval of the Summons                 For       For          Management
2     Approval of the Agenda                  For       For          Management
3     Designate Inspector(s) of Minutes of    For       For          Management
      the Meeting
4     Amend Resolutions Passed at June 29,    For       For          Management
      2009 Meeting Re: Consent from the
      Lending Syndicate; Proportionate
      Dilution of Ownership of Skeie Group
      and Wideluck; The Event of Default


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SKEIE DRILLING & PRODUCTION ASA

Ticker:       SKDP           Security ID:  R7034S104
Meeting Date: SEP 24, 2009   Meeting Type: Special
Record Date:

#     Proposal                                Mgt Rec   Vote Cast    Sponsor
1     Open Meeting; Registration of Attending None      Did Not Vote Management
      Shareholders and Proxies
2     Elect Chairman of Meeting; Designate    For       Did Not Vote Management
      Inspector(s) of Minutes of Meeting
3     Approve Notice of Meeting and Agenda    For       Did Not Vote Management
4     Elect Lesley Jones and Ngiam Jih Wong   For       Did Not Vote Management
      as Directors
5     Amend Articles Re: Approve Electronic   For       Did Not Vote Management
      Publication of Meeting Notice Material


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SKEIE DRILLING & PRODUCTION ASA

Ticker:       SKDP           Security ID:  R7034S104
Meeting Date: MAY 6, 2010    Meeting Type: Special
Record Date:  APR 22, 2010

#     Proposal                                Mgt Rec   Vote Cast    Sponsor
1     Open Meeting; Registration of Attending None      None         Management
      Shareholders and Proxies
2     Elect Chairman of Meeting; Designate    For       For          Management
      Inspector(s) of Minutes of Meeting
3     Approve Notice of Meeting and Agenda    For       For          Management
4     Approve Issuance of 208.2 Million       For       For          Management
      Shares for a Private Placement
5     Approve Creation of NOK 21 Million Pool For       For          Management
      of Capital without Preemptive Rights


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SKEIE DRILLING & PRODUCTION ASA

Ticker:       SKDP           Security ID:  R7034S104
Meeting Date: JUN 22, 2010   Meeting Type: Annual
Record Date:  JUN 8, 2010

#     Proposal                                Mgt Rec   Vote Cast    Sponsor
1     Open Meeting; Registration of Attending None      None         Management
      Shareholders and Proxies
2     Elect Chairman of Meeting; Designate    For       For          Management
      Inspector(s) of Minutes of Meeting
3     Approve Notice of Meeting and Agenda    For       For          Management
4     Approve Financial Statements and        For       For          Management
      Statutory Reports
5     Approve Remuneration of Directors in    For       For          Management
      the Amounts of NOK 450,000 to Bjarne
      Skeie, NOK 208,333 to Margaret Hawkins,
      NOK 250,000 to Anne Breive, NOK 208,333
      to Ngiam Wong, and NOK 41,666 to Mah
      Edmund
6     Approve Remuneration of Auditors        For       For          Management
7     Approve Remuneration Policy And Other   For       For          Management
      Terms of Employment For Executive
      Management


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TEVA PHARMACEUTICAL INDUSTRIES LTD.

Ticker:       TEVA           Security ID:  881624209
Meeting Date: JUN 29, 2010   Meeting Type: Annual
Record Date:  MAY 24, 2010

#     Proposal                                Mgt Rec   Vote Cast    Sponsor
1     Approve Final Dividend of NIS 2.50 (USD For       For          Management
      0.642) Per Share
2     Election Of Director: Mr. Abraham E.    For       For          Management
      Cohen
3     Election Of Director: Mr. Amir Elstein  For       For          Management
4     Election Of Director: Prof. Roger       For       For          Management
      Kornberg
5     Election Of Director: Prof. Moshe Many  For       For          Management
6     Election Of Director: Mr. Dan Propper   For       For          Management
7     Approve Auditors and Authorize Board to For       For          Management
      Fix Their Remuneration
8     Approve Stock Option Plan               For       For          Management
9     Approve Compensation of Board Chairman  For       For          Management
10    Approve Compensation of Director        For       For          Management
11    Approve Compensation of Director        For       For          Management
12    Increase Authorized Share Capital       For       For          Management


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UMOE BIOENERGY ASA

Ticker:       UMOE           Security ID:  R1137LAA6
Meeting Date: OCT 19, 2009   Meeting Type: Bondholder
Record Date:

#     Proposal                                Mgt Rec   Vote Cast    Sponsor
1     Approval of the Summons of the Meeting  For       Did Not Vote Management
2     Approve Agenda of Meeting               For       Did Not Vote Management
3     Designate Inspector(s) of Minutes of    For       Did Not Vote Management
      Meeting
4     Approve Amendment to Loan Agreement and For       Did Not Vote Management
      Approve Debt Restructuring and Interim
      Financing

========== END NPX REPORT