<SEC-DOCUMENT>0001752724-21-192904-index.html : 20210907
<SEC-HEADER>0001752724-21-192904.hdr.sgml : 20210907
<ACCEPTANCE-DATETIME>20210907105303
ACCESSION NUMBER:		0001752724-21-192904
CONFORMED SUBMISSION TYPE:	N-CEN
PUBLIC DOCUMENT COUNT:		3
CONFORMED PERIOD OF REPORT:	20210630
FILED AS OF DATE:		20210907
DATE AS OF CHANGE:		20210907
EFFECTIVENESS DATE:		20210907

FILER:

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

	FILING VALUES:
		FORM TYPE:		N-CEN
		SEC ACT:		1940 Act
		SEC FILE NUMBER:	811-09013
		FILM NUMBER:		211238610

	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>N-CEN
<SEQUENCE>1
<FILENAME>primary_doc.xml
<TEXT>
Document 1 - file: primary_doc.html

Document 1 - RAW XML: primary_doc.xml

</DOCUMENT>
<DOCUMENT>
<TYPE>INTERNAL CONTROL RPT
<SEQUENCE>2
<FILENAME>NCEN_811-09013_3308620481.txt
<TEXT>
Document 2 - file: NCEN_811-09013_3308620481.txt

</DOCUMENT>
<DOCUMENT>
<TYPE>LEGAL PROCEEDINGS
<SEQUENCE>3
<FILENAME>NCEN_811-09013_1284928592.txt
<TEXT>
Document 3 - file: NCEN_811-09013_1284928592.txt

</DOCUMENT>
</SEC-DOCUMENT>