<SEC-DOCUMENT>0000940394-17-001601-index.html : 20170828
<SEC-HEADER>0000940394-17-001601.hdr.sgml : 20170828
<ACCEPTANCE-DATETIME>20170828133042
ACCESSION NUMBER:		0000940394-17-001601
CONFORMED SUBMISSION TYPE:	NSAR-B
PUBLIC DOCUMENT COUNT:		2
CONFORMED PERIOD OF REPORT:	20170630
FILED AS OF DATE:		20170828
DATE AS OF CHANGE:		20170828
EFFECTIVENESS DATE:		20170828

FILER:

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

	FILING VALUES:
		FORM TYPE:		NSAR-B
		SEC ACT:		1940 Act
		SEC FILE NUMBER:	811-09013
		FILM NUMBER:		171054065

	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>NSAR-B
<SEQUENCE>1
<FILENAME>sitaf.fil
<DESCRIPTION>ANSWER FILE
<TEXT>
Document 1 - file: sitaf.fil

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.77B ACCT LTTR
<SEQUENCE>2
<FILENAME>sital.txt
<DESCRIPTION>AUDIT LETTER
<TEXT>
Document 2 - file: sital.txt

</DOCUMENT>
</SEC-DOCUMENT>