<SEC-DOCUMENT>0000940394-18-000450-index.html : 20180228
<SEC-HEADER>0000940394-18-000450.hdr.sgml : 20180228
<ACCEPTANCE-DATETIME>20180228102209
ACCESSION NUMBER:		0000940394-18-000450
CONFORMED SUBMISSION TYPE:	NSAR-A
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20171231
FILED AS OF DATE:		20180228
DATE AS OF CHANGE:		20180228
EFFECTIVENESS DATE:		20180228

FILER:

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

	FILING VALUES:
		FORM TYPE:		NSAR-A
		SEC ACT:		1940 Act
		SEC FILE NUMBER:	811-09013
		FILM NUMBER:		18648571

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

</DOCUMENT>
</SEC-DOCUMENT>