<SEC-DOCUMENT>0000940394-20-000675-index.html : 20200324
<SEC-HEADER>0000940394-20-000675.hdr.sgml : 20200324
<ACCEPTANCE-DATETIME>20200324094349
ACCESSION NUMBER:		0000940394-20-000675
CONFORMED SUBMISSION TYPE:	497
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20200324
DATE AS OF CHANGE:		20200324
EFFECTIVENESS DATE:		20200324

FILER:

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

	FILING VALUES:
		FORM TYPE:		497
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	333-227968
		FILM NUMBER:		20736937

	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>497
<SEQUENCE>1
<FILENAME>evfprosupp.htm
<DESCRIPTION>EATON VANCE SENIOR INCOME TRUST THRESHOLD SUPPLEMENT DTD 3-24-2020
<TEXT>
Document 1 - file: evfprosupp.htm

</DOCUMENT>
</SEC-DOCUMENT>