<SEC-DOCUMENT>0000940394-19-000482.txt : 20190228
<SEC-HEADER>0000940394-19-000482.hdr.sgml : 20190228
<ACCEPTANCE-DATETIME>20190228141821
ACCESSION NUMBER:		0000940394-19-000482
CONFORMED SUBMISSION TYPE:	497
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20190228
DATE AS OF CHANGE:		20190228
EFFECTIVENESS DATE:		20190228

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:		19642294

	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>prosupp.htm
<DESCRIPTION>EATON VANCE SENIOR INCOME TRUST PRO SUPP DTD 2-28-19
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<P STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin: 0; text-align: center"><B>&nbsp;</B></P>

<P STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin: 0; text-align: center"><B>EATON VANCE SENIOR INCOME TRUST</B></P>

<P STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin: 0; text-align: center"><B>Supplement to Prospectus dated February 28,
2019</B></P>

<P STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin: 0; text-align: center"><B>&nbsp;</B></P>

<P STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin: 0; text-align: center">&nbsp;</P>

<P STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin: 3pt 0 3pt 0.25in">Effective March 1, 2019, Andrew N. Sveen will join
the portfolio management team of Eaton Vance Senior Income Trust. Mr. Sveen has been employed by Eaton Vance for more than five
years and also manages other Eaton Vance floating-rate loan funds and/or portfolios.</P>

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<P STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin: 3pt 0 3pt 0.25in">&nbsp;</P>

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<P STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin: 3pt 0 3pt 0.25in">&nbsp;</P>

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    <TD STYLE="width: 48%; padding-top: 6pt; padding-bottom: 3pt; font: 10pt NewsGoth Dm BT"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif">February 28, 2019</FONT></TD>
    <TD STYLE="width: 52%; padding-top: 6pt; padding-bottom: 3pt; text-align: right; font: 10pt NewsGoth Dm BT">&nbsp;</TD></TR>
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