<SEC-DOCUMENT>0001752724-21-000815-index.html : 20210108
<SEC-HEADER>0001752724-21-000815.hdr.sgml : 20210108
<ACCEPTANCE-DATETIME>20210108142601
ACCESSION NUMBER:		0001752724-21-000815
CONFORMED SUBMISSION TYPE:	N-CEN
PUBLIC DOCUMENT COUNT:		2
CONFORMED PERIOD OF REPORT:	20201031
FILED AS OF DATE:		20210108
DATE AS OF CHANGE:		20210108
EFFECTIVENESS DATE:		20210108

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			EATON VANCE SPECIAL INVESTMENT TRUST
		CENTRAL INDEX KEY:			0000031266
		IRS NUMBER:				046039283

	FILING VALUES:
		FORM TYPE:		N-CEN
		SEC ACT:		1940 Act
		SEC FILE NUMBER:	811-01545
		FILM NUMBER:		21517057

	BUSINESS ADDRESS:	
		STREET 1:		TWO INTERNATIONAL PLACE
		CITY:			BOSTON
		STATE:			MA
		ZIP:			02110
		BUSINESS PHONE:		6174828260

	MAIL ADDRESS:	
		STREET 1:		TWO INTERNATIONAL PLACE
		CITY:			BOSTON
		STATE:			MA
		ZIP:			02110

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	EATON VANCE SPECIAL EQUITIES FUND
		DATE OF NAME CHANGE:	19920703

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	EATON VANCE SPECIAL EQUITIES FUND INC
		DATE OF NAME CHANGE:	19890619
<SERIES-AND-CLASSES-CONTRACTS-DATA>
<EXISTING-SERIES-AND-CLASSES-CONTRACTS>
<SERIES>
<OWNER-CIK>0000031266
<SERIES-ID>S000028366
<SERIES-NAME>Eaton Vance Short Duration Inflation-Protected Income Fund
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000086684
<CLASS-CONTRACT-NAME>Eaton Vance Short Duration Inflation-Protected Income Fund Class A
<CLASS-CONTRACT-TICKER-SYMBOL>EARRX
</CLASS-CONTRACT>
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000086685
<CLASS-CONTRACT-NAME>Eaton Vance Short Duration Inflation-Protected Income Fund Class C
<CLASS-CONTRACT-TICKER-SYMBOL>ECRRX
</CLASS-CONTRACT>
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000086686
<CLASS-CONTRACT-NAME>Eaton Vance Short Duration Inflation-Protected Income Fund Class I
<CLASS-CONTRACT-TICKER-SYMBOL>EIRRX
</CLASS-CONTRACT>
</SERIES>
</EXISTING-SERIES-AND-CLASSES-CONTRACTS>
</SERIES-AND-CLASSES-CONTRACTS-DATA>
</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_2760225112204140.txt
<TEXT>
Document 2 - file: NCEN_2760225112204140.txt

</DOCUMENT>
</SEC-DOCUMENT>