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

                                   FORM N-PX

    ANNUAL REPORT OF PROXY VOTING RECORD OF REGISTERED MANAGEMENT INVESTMENT
                                     COMPANY

 INVESTMENT COMPANY ACT FILE NUMBER:     811-09013

 NAME OF REGISTRANT:                     Eaton Vance Senior Income
                                         Trust



 ADDRESS OF PRINCIPAL EXECUTIVE OFFICES: Two International Place
                                         Boston, MA 02110

 NAME AND ADDRESS OF AGENT FOR SERVICE:  Maureen A. Gemma, Esq.
                                         Two International Place
                                         Boston, MA 02110

 REGISTRANT'S TELEPHONE NUMBER:          617-482-8260

 DATE OF FISCAL YEAR END:                06/30

 DATE OF REPORTING PERIOD:               07/01/2010 - 06/30/2011





                                                                                                  

Eaton Vance Senior Income Trust
--------------------------------------------------------------------------------------------------------------------------
 BLACKROCK FLTING RT INCOME ST FD II INC                                                     Agenda Number:  933311514
--------------------------------------------------------------------------------------------------------------------------
        Security:  09255Y108
    Meeting Type:  Annual
    Meeting Date:  02-Nov-2010
          Ticker:  FRB
            ISIN:  US09255Y1082
--------------------------------------------------------------------------------------------------------------------------

Prop.# Proposal                                                  Proposal      Proposal Vote                  For/Against
                                                                 Type                                         Management

01     DIRECTOR
       RICHARD E. CAVANAGH                                       Mgmt          For                            For
       RICHARD S. DAVIS                                          Mgmt          For                            For
       FRANK J. FABOZZI                                          Mgmt          For                            For
       KATHLEEN F. FELDSTEIN                                     Mgmt          For                            For
       JAMES T. FLYNN                                            Mgmt          For                            For
       HENRY GABBAY                                              Mgmt          For                            For
       JERROLD B. HARRIS                                         Mgmt          For                            For
       R. GLENN HUBBARD                                          Mgmt          For                            For
       W. CARL KESTER                                            Mgmt          For                            For
       KAREN P. ROBARDS                                          Mgmt          For                            For




--------------------------------------------------------------------------------------------------------------------------
 BLACKROCK FLTING RT INCOME STRA FD INC                                                      Agenda Number:  933311514
--------------------------------------------------------------------------------------------------------------------------
        Security:  09255X100
    Meeting Type:  Annual
    Meeting Date:  02-Nov-2010
          Ticker:  FRA
            ISIN:  US09255X1000
--------------------------------------------------------------------------------------------------------------------------

Prop.# Proposal                                                  Proposal      Proposal Vote                  For/Against
                                                                 Type                                         Management

01     DIRECTOR
       RICHARD E. CAVANAGH                                       Mgmt          For                            For
       RICHARD S. DAVIS                                          Mgmt          For                            For
       FRANK J. FABOZZI                                          Mgmt          For                            For
       KATHLEEN F. FELDSTEIN                                     Mgmt          For                            For
       JAMES T. FLYNN                                            Mgmt          For                            For
       HENRY GABBAY                                              Mgmt          For                            For
       JERROLD B. HARRIS                                         Mgmt          For                            For
       R. GLENN HUBBARD                                          Mgmt          For                            For
       W. CARL KESTER                                            Mgmt          For                            For
       KAREN P. ROBARDS                                          Mgmt          For                            For




--------------------------------------------------------------------------------------------------------------------------
 BLACKROCK GLOBAL FUND                                                                       Agenda Number:  933310942
--------------------------------------------------------------------------------------------------------------------------
        Security:  091941104
    Meeting Type:  Annual
    Meeting Date:  02-Sep-2010
          Ticker:  BGT
            ISIN:  US0919411043
--------------------------------------------------------------------------------------------------------------------------

Prop.# Proposal                                                  Proposal      Proposal Vote                  For/Against
                                                                 Type                                         Management

01     DIRECTOR
       RICHARD E. CAVANAGH                                       Mgmt          For                            For
       KATHLEEN F. FELDSTEIN                                     Mgmt          For                            For
       HENRY GABBAY                                              Mgmt          For                            For
       JERROLD B. HARRIS                                         Mgmt          For                            For




--------------------------------------------------------------------------------------------------------------------------
 BUFFETS RESTAURANTS HLDGS INC                                                               Agenda Number:  933337506
--------------------------------------------------------------------------------------------------------------------------
        Security:  11988P107
    Meeting Type:  Annual
    Meeting Date:  27-Oct-2010
          Ticker:  BUFR
            ISIN:  US11988P1075
--------------------------------------------------------------------------------------------------------------------------

Prop.# Proposal                                                  Proposal      Proposal Vote                  For/Against
                                                                 Type                                         Management

01     PROPOSAL TO RATIFY THE APPOINTMENT OF DELOITTE            Mgmt          Against                        Against
       & TOUCHE LLP AS THE COMPANY'S INDEPENDENT AUDITORS.




--------------------------------------------------------------------------------------------------------------------------
 COMPTON PETROLEUM FIN CORP                                                                  Agenda Number:  933313847
--------------------------------------------------------------------------------------------------------------------------
        Security:  204755AB8
    Meeting Type:  Special
    Meeting Date:  14-Sep-2010
          Ticker:
            ISIN:  US204755AB85
--------------------------------------------------------------------------------------------------------------------------

Prop.# Proposal                                                  Proposal      Proposal Vote                  For/Against
                                                                 Type                                         Management

01     A RESOLUTION OF NOTEHOLDERS (THE "NOTEHOLDERS'            Mgmt          For                            For
       ARRANGEMENT RESOLUTION"), THE FULL TEXT OF
       WHICH IS SET OUT IN APPENDIX "A" TO THE ACCOMPANYING
       MANAGEMENT PROXY CIRCULAR (THE "CIRCULAR"),
       APPROVING AMONG OTHER THINGS AN ARRANGEMENT
       (THE "ARRANGEMENT") PURSUANT TO SECTION 192
       OF THE CANADA BUSINESS CORPORATIONS ACT, WHICH
       ARRANGEMENT IS MORE PARTICULARLY DESCRIBED
       IN THE CIRCULAR




--------------------------------------------------------------------------------------------------------------------------
 GREEKTOWN SUPERHOLDINGS INC                                                                 Agenda Number:  933450998
--------------------------------------------------------------------------------------------------------------------------
        Security:  392485108
    Meeting Type:  Annual
    Meeting Date:  08-Jun-2011
          Ticker:  GRKT
            ISIN:  US3924851088
--------------------------------------------------------------------------------------------------------------------------

Prop.# Proposal                                                  Proposal      Proposal Vote                  For/Against
                                                                 Type                                         Management

01     DIRECTOR
       JOHN BITOVE                                               Mgmt          For                            For
       GEORGE BOYER                                              Mgmt          Withheld                       Against
       MICHAEL E. DUGGAN                                         Mgmt          For                            For
       BENJAMIN C. DUSTER IV                                     Mgmt          For                            For
       FREMAN HENDRIX                                            Mgmt          For                            For
       YVETTE E. LANDAU                                          Mgmt          For                            For




--------------------------------------------------------------------------------------------------------------------------
 PIONEER FLOATING RATE TRUST                                                                 Agenda Number:  933316350
--------------------------------------------------------------------------------------------------------------------------
        Security:  72369J102
    Meeting Type:  Annual
    Meeting Date:  22-Sep-2010
          Ticker:  PHD
            ISIN:  US72369J1025
--------------------------------------------------------------------------------------------------------------------------

Prop.# Proposal                                                  Proposal      Proposal Vote                  For/Against
                                                                 Type                                         Management

01     DIRECTOR
       DAVID R. BOCK                                             Mgmt          For                            For
       STEPHEN K. WEST                                           Mgmt          For                            For




--------------------------------------------------------------------------------------------------------------------------
 SEMGROUP CORPORATION                                                                        Agenda Number:  933436962
--------------------------------------------------------------------------------------------------------------------------
        Security:  81663A105
    Meeting Type:  Annual
    Meeting Date:  25-May-2011
          Ticker:  SEMG
            ISIN:  US81663A1051
--------------------------------------------------------------------------------------------------------------------------

Prop.# Proposal                                                  Proposal      Proposal Vote                  For/Against
                                                                 Type                                         Management

01     DIRECTOR
       RONALD A. BALLSCHMIEDE                                    Mgmt          For                            For
       SARAH M. BARPOULIS                                        Mgmt          For                            For
       JOHN F. CHLEBOWSKI                                        Mgmt          For                            For
       STANLEY C. HORTON                                         Mgmt          For                            For
       KARL F. KURZ                                              Mgmt          For                            For
       THOMAS R. MCDANIEL                                        Mgmt          For                            For
       NORMAN J. SZYDLOWSKI                                      Mgmt          For                            For

02     TO APPROVE, ON A NON-BINDING ADVISORY BASIS,              Mgmt          For                            For
       THE COMPENSATION OF THE COMPANY'S NAMED EXECUTIVE
       OFFICERS.

03     TO SELECT, ON A NON-BINDING ADVISORY BASIS,               Mgmt          1 Year                         For
       THE FREQUENCY OF FUTURE STOCKHOLDER ADVISORY
       VOTES ON EXECUTIVE COMPENSATION.

04     RATIFICATION OF BDO USA, LLP AS INDEPENDENT               Mgmt          For                            For
       REGISTERED PUBLIC ACCOUNTING FIRM FOR 2011.




--------------------------------------------------------------------------------------------------------------------------
 SUPERMEDIA INC                                                                              Agenda Number:  933404131
--------------------------------------------------------------------------------------------------------------------------
        Security:  868447103
    Meeting Type:  Annual
    Meeting Date:  11-May-2011
          Ticker:  SPMD
            ISIN:  US8684471035
--------------------------------------------------------------------------------------------------------------------------

Prop.# Proposal                                                  Proposal      Proposal Vote                  For/Against
                                                                 Type                                         Management

01     DIRECTOR
       EDWARD J. BAYONE                                          Mgmt          For                            For
       ROBERT C. BLATTBERG                                       Mgmt          For                            For
       CHARLES B. CARDEN                                         Mgmt          For                            For
       ROBIN DOMENICONI                                          Mgmt          For                            For
       THOMAS D. GARDNER                                         Mgmt          For                            For
       DAVID E. HAWTHORNE                                        Mgmt          For                            For
       PETER J. MCDONALD                                         Mgmt          For                            For
       THOMAS S. ROGERS                                          Mgmt          For                            For
       JOHN SLATER                                               Mgmt          For                            For
       DOUGLAS D. WHEAT                                          Mgmt          For                            For

02     ADVISORY VOTE APPROVING SUPERMEDIA'S EXECUTIVE            Mgmt          For                            For
       COMPENSATION.

03     ADVISORY VOTE ON THE FREQUENCY OF EXECUTIVE               Mgmt          1 Year                         For
       COMPENSATION VOTE.

04     RATIFICATION OF ERNST & YOUNG LLP AS SUPERMEDIA'S         Mgmt          For                            For
       INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM
       FOR 2011.




--------------------------------------------------------------------------------------------------------------------------
 VAN KAMPEN SENIOR INCOME TRUST                                                              Agenda Number:  933305078
--------------------------------------------------------------------------------------------------------------------------
        Security:  920961109
    Meeting Type:  Annual
    Meeting Date:  10-Sep-2010
          Ticker:
            ISIN:
--------------------------------------------------------------------------------------------------------------------------

Prop.# Proposal                                                  Proposal      Proposal Vote                  For/Against
                                                                 Type                                         Management

01     DIRECTOR
       R. CRAIG KENNEDY                                          Mgmt          For                            For
       JACK E. NELSON                                            Mgmt          For                            For
       COLIN D. MEADOWS                                          Mgmt          For                            For




--------------------------------------------------------------------------------------------------------------------------
 WELLMAN HOLDINGS, INC.                                                                      Agenda Number:  933319142
--------------------------------------------------------------------------------------------------------------------------
        Security:  949700AA6
    Meeting Type:  Annual
    Meeting Date:  29-Sep-2010
          Ticker:
            ISIN:  US949700AA66
--------------------------------------------------------------------------------------------------------------------------

Prop.# Proposal                                                  Proposal      Proposal Vote                  For/Against
                                                                 Type                                         Management

1A     ELECTION OF CHARLES MACALUSO (AT-LARGE DIRECTOR)          Mgmt          For                            For

1B     ELECTION OF DUNCAN H. COCROFT (AT-LARGE DIRECTOR)         Mgmt          For                            For

1C     ELECTION OF KENNETH A. GHAZEY (AT-LARGE DIRECTOR)         Mgmt          For                            For

1D     ELECTION OF JAMES D. JACKSON (AT-LARGE DIRECTOR)          Mgmt          For                            For

1E     ELECTION OF LINDA KOFFENBERGER (AT-LARGE DIRECTOR)        Mgmt          For                            For

1F     ELECTION OF ARI M. CHANEY (THIRD LIEN DIRECTOR)           Mgmt          For                            For




--------------------------------------------------------------------------------------------------------------------------
 WELLMAN HOLDINGS, INC.                                                                      Agenda Number:  933319130
--------------------------------------------------------------------------------------------------------------------------
        Security:  949700108
    Meeting Type:  Annual
    Meeting Date:  29-Sep-2010
          Ticker:
            ISIN:  US9497001084
--------------------------------------------------------------------------------------------------------------------------

Prop.# Proposal                                                  Proposal      Proposal Vote                  For/Against
                                                                 Type                                         Management

01     DIRECTOR
       MARK J. RUDAY *                                           Mgmt          For                            For

1A     ELECTION OF CHARLES MACALUSO (AT-LARGE DIRECTOR)          Mgmt          For                            For

1B     ELECTION OF DUNCAN H. COCROFT (AT-LARGE DIRECTOR)         Mgmt          For                            For

1C     ELECTION OF KENNETH A. GHAZEY (AT-LARGE DIRECTOR)         Mgmt          For                            For

1D     ELECTION OF JAMES D. JACKSON (AT-LARGE DIRECTOR)          Mgmt          For                            For

1E     ELECTION OF LINDA KOFFENBERGER (AT-LARGE DIRECTOR)        Mgmt          For                            For




--------------------------------------------------------------------------------------------------------------------------
 WELLMAN HOLDINGS, INC.                                                                      Agenda Number:  933460571
--------------------------------------------------------------------------------------------------------------------------
        Security:  949700AA6
    Meeting Type:  Consent
    Meeting Date:  02-Jun-2011
          Ticker:
            ISIN:  US949700AA66
--------------------------------------------------------------------------------------------------------------------------

Prop.# Proposal                                                  Proposal      Proposal Vote                  For/Against
                                                                 Type                                         Management

01     TO APPROVE THE AGREEMENT AND PLAN OF MERGER,              Mgmt          Against                        Against
       DATED AS OF APRIL 27, 2011, BY AND AMONG GRUPO
       PETROTEMEX, S.A. DE C.V. ("GRUPO PETROTEMEX"),
       GPT MERGER SUB CORPORATION ("MERGER SUB"),
       AND WELLMAN HOLDINGS, INC. ("WELLMAN"), RELATING
       TO THE MERGER OF MERGER SUB WITH AND INTO WELLMAN,
       WITH WELLMAN CONTINUING AS A WHOLLY-OWNED SUBSIDIARY
       OF GRUPO PETROTEMEX.

02     TO APPROVE THE COMPLETION BONUS IN THE AGGREGATE          Mgmt          Against                        Against
       AMOUNT OF $2.5 MILLION TO BE PAID TO CERTAIN
       OFFICERS AND DIRECTORS IN CONNECTION WITH THE
       PROPOSED MERGER OF MERGER SUB AND WELLMAN.




--------------------------------------------------------------------------------------------------------------------------
 WELLMAN HOLDINGS, INC.                                                                      Agenda Number:  933460569
--------------------------------------------------------------------------------------------------------------------------
        Security:  949700108
    Meeting Type:  Consent
    Meeting Date:  02-Jun-2011
          Ticker:
            ISIN:  US9497001084
--------------------------------------------------------------------------------------------------------------------------

Prop.# Proposal                                                  Proposal      Proposal Vote                  For/Against
                                                                 Type                                         Management

01     TO APPROVE THE AGREEMENT AND PLAN OF MERGER,              Mgmt          Against                        Against
       DATED AS OF APRIL 27, 2011, BY AND AMONG GRUPO
       PETROTEMEX, S.A. DE C.V. ("GRUPO PETROTEMEX"),
       GPT MERGER SUB CORPORATION ("MERGER SUB"),
       AND WELLMAN HOLDINGS, INC. ("WELLMAN"), RELATING
       TO THE MERGER OF MERGER SUB WITH AND INTO WELLMAN,
       WITH WELLMAN CONTINUING AS A WHOLLY-OWNED SUBSIDIARY
       OF GRUPO PETROTEMEX.

02     TO APPROVE THE COMPLETION BONUS IN THE AGGREGATE          Mgmt          Against                        Against
       AMOUNT OF $2.5 MILLION TO BE PAID TO CERTAIN
       OFFICERS AND DIRECTORS IN CONNECTION WITH THE
       PROPOSED MERGER OF MERGER SUB AND WELLMAN.



* Management position unknown





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)         Eaton Vance Senior Income Trust
By (Signature)       /s/ Scott H. Page
Name                 Scott H. Page
Title                President
Date                 08/17/2011