<SEC-DOCUMENT>0001104659-21-032743-index.html : 20210305
<SEC-HEADER>0001104659-21-032743.hdr.sgml : 20210305
<ACCEPTANCE-DATETIME>20210305161525
ACCESSION NUMBER:		0001104659-21-032743
CONFORMED SUBMISSION TYPE:	497K
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20210305
DATE AS OF CHANGE:		20210305
EFFECTIVENESS DATE:		20210305

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			MORGAN STANLEY INSTITUTIONAL FUND INC
		CENTRAL INDEX KEY:			0000836487
		IRS NUMBER:				000000000
		STATE OF INCORPORATION:			MD
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		497K
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	033-23166
		FILM NUMBER:		21718658

	BUSINESS ADDRESS:	
		STREET 1:		522 FIFTH AVENUE
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10036
		BUSINESS PHONE:		800-548-7786

	MAIL ADDRESS:	
		STREET 1:		522 FIFTH AVENUE
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10036

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	MORGAN STANLEY DEAN WITTER INSTITUTIONAL FUND INC
		DATE OF NAME CHANGE:	19990329

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	MORGAN STANLEY INSTITUTIONAL FUND INC
		DATE OF NAME CHANGE:	19920703
<SERIES-AND-CLASSES-CONTRACTS-DATA>
<EXISTING-SERIES-AND-CLASSES-CONTRACTS>
<SERIES>
<OWNER-CIK>0000836487
<SERIES-ID>S000027995
<SERIES-NAME>Global Opportunity Portfolio
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000085098
<CLASS-CONTRACT-NAME>Class I
<CLASS-CONTRACT-TICKER-SYMBOL>MGGIX
</CLASS-CONTRACT>
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000085099
<CLASS-CONTRACT-NAME>Class L
<CLASS-CONTRACT-TICKER-SYMBOL>MGGLX
</CLASS-CONTRACT>
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000085100
<CLASS-CONTRACT-NAME>Class A
<CLASS-CONTRACT-TICKER-SYMBOL>MGGPX
</CLASS-CONTRACT>
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000126921
<CLASS-CONTRACT-NAME>Class IS
<CLASS-CONTRACT-TICKER-SYMBOL>MGTSX
</CLASS-CONTRACT>
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000155900
<CLASS-CONTRACT-NAME>Class C
<CLASS-CONTRACT-TICKER-SYMBOL>MSOPX
</CLASS-CONTRACT>
</SERIES>
</EXISTING-SERIES-AND-CLASSES-CONTRACTS>
</SERIES-AND-CLASSES-CONTRACTS-DATA>
</SEC-HEADER>
<DOCUMENT>
<TYPE>497K
<SEQUENCE>1
<FILENAME>a21-8652_12497k.htm
<DESCRIPTION>497K
<TEXT>
Document 1 - file: a21-8652_12497k.htm

</DOCUMENT>
</SEC-DOCUMENT>