    <SEC-DOCUMENT>0000940394-14-001403-index.html : 20141027
    <SEC-HEADER>0000940394-14-001403.hdr.sgml : 20141027
    <ACCEPTANCE-DATETIME>20141027153809
    ACCESSION NUMBER:		0000940394-14-001403
    CONFORMED SUBMISSION TYPE:	486BPOS
    PUBLIC DOCUMENT COUNT:		8
    FILED AS OF DATE:		20141027
    DATE AS OF CHANGE:		20141027
    EFFECTIVENESS DATE:		20141027

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			EATON VANCE SENIOR INCOME TRUST
    		CENTRAL INDEX KEY:			0001070732
    		IRS NUMBER:				043435040

    	FILING VALUES:
    		FORM TYPE:		486BPOS
    		SEC ACT:		1933 Act
    		SEC FILE NUMBER:	333-175096
    		FILM NUMBER:		141174522

    	BUSINESS ADDRESS:
    		STREET 1:		TWO INTERNATIONAL PLACE
    		CITY:			BOSTON
    		STATE:			MA
    		ZIP:			02110
    		BUSINESS PHONE:		617-482-8260

    	MAIL ADDRESS:
    		STREET 1:		TWO INTERNATIONAL PLACE
    		CITY:			BOSTON
    		STATE:			MA
    		ZIP:			02110

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			EATON VANCE SENIOR INCOME TRUST
    		CENTRAL INDEX KEY:			0001070732
    		IRS NUMBER:				043435040

    	FILING VALUES:
    		FORM TYPE:		486BPOS
    		SEC ACT:		1940 Act
    		SEC FILE NUMBER:	811-09013
    		FILM NUMBER:		141174523

    	BUSINESS ADDRESS:
    		STREET 1:		TWO INTERNATIONAL PLACE
    		CITY:			BOSTON
    		STATE:			MA
    		ZIP:			02110
    		BUSINESS PHONE:		617-482-8260

    	MAIL ADDRESS:
    		STREET 1:		TWO INTERNATIONAL PLACE
    		CITY:			BOSTON
    		STATE:			MA
    		ZIP:			02110
    </SEC-HEADER>
    <DOCUMENT>
    <TYPE>486BPOS
    <SEQUENCE>1
    <FILENAME>sitpea3final.htm
    <DESCRIPTION>SENIOR INCOME TRUST PEA#3 DTD 10-27-2014
    <TEXT>
    Document 1 - file: sitpea3final.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.K2
    <SEQUENCE>2
    <FILENAME>exhibitk2_ex99zk2.htm
    <DESCRIPTION>AMENDED AND RESTATED ADMINSTRATIVE SERVICES AGREEMENT DTD 8-6-2012
    <TEXT>
    Document 2 - file: exhibitk2_ex99zk2.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.L
    <SEQUENCE>3
    <FILENAME>exhibitl_ex99zl.htm
    <DESCRIPTION>OPINION OF INTERNAL COUNSEL DTD 10-27-2014
    <TEXT>
    Document 3 - file: exhibitl_ex99zl.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.N
    <SEQUENCE>4
    <FILENAME>exhibitn_ex99zn.htm
    <DESCRIPTION>CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM DTD 10-27-2014
    <TEXT>
    Document 4 - file: exhibitn_ex99zn.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-99.S
    <SEQUENCE>5
    <FILENAME>exhibits_ex99zs.htm
    <DESCRIPTION>POWER OF ATTORNEY DTD 8-11-2014
    <TEXT>
    Document 5 - file: exhibits_ex99zs.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>7
    <FILENAME>exhibitl_ex99zl002.gif
    <DESCRIPTION>IMAGE
    <TEXT>
    Document 7 - file: exhibitl_ex99zl002.gif

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>8
    <FILENAME>sitpro002.gif
    <DESCRIPTION>IMAGE
    <TEXT>
    Document 8 - file: sitpro002.gif

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>9
    <FILENAME>letter_cover002.gif
    <DESCRIPTION>IMAGE
    <TEXT>
    Document 9 - file: letter_cover002.gif

    </DOCUMENT>
    </SEC-DOCUMENT>