<SEC-DOCUMENT>0000940394-20-000574-index.html : 20200318
<SEC-HEADER>0000940394-20-000574.hdr.sgml : 20200318
<ACCEPTANCE-DATETIME>20200318092702
ACCESSION NUMBER:		0000940394-20-000574
CONFORMED SUBMISSION TYPE:	497
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20200318
DATE AS OF CHANGE:		20200318
EFFECTIVENESS DATE:		20200318

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:		20723379

	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 3-18-2020
<TEXT>
Document 1 - file: evfprosupp.htm

</DOCUMENT>
</SEC-DOCUMENT>