<SEC-DOCUMENT>0001133228-24-004787-index.html : 20240429
<SEC-HEADER>0001133228-24-004787.hdr.sgml : 20240429
<ACCEPTANCE-DATETIME>20240426215247
ACCESSION NUMBER:		0001133228-24-004787
CONFORMED SUBMISSION TYPE:	497K
PUBLIC DOCUMENT COUNT:		4
FILED AS OF DATE:		20240429
DATE AS OF CHANGE:		20240426
EFFECTIVENESS DATE:		20240429

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			MORGAN STANLEY INSTITUTIONAL FUND INC
		CENTRAL INDEX KEY:			0000836487
		ORGANIZATION NAME:           	
		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:		24886276

	BUSINESS ADDRESS:	
		STREET 1:		1585 BROADWAY
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10036
		BUSINESS PHONE:		800-548-7786

	MAIL ADDRESS:	
		STREET 1:		1585 BROADWAY
		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>S000002821
<SERIES-NAME>U.S. REAL ESTATE PORTFOLIO
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000007738
<CLASS-CONTRACT-NAME>CLASS I
<CLASS-CONTRACT-TICKER-SYMBOL>MSUSX
</CLASS-CONTRACT>
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000007739
<CLASS-CONTRACT-NAME>CLASS A
<CLASS-CONTRACT-TICKER-SYMBOL>MUSDX
</CLASS-CONTRACT>
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000104301
<CLASS-CONTRACT-NAME>Class L
<CLASS-CONTRACT-TICKER-SYMBOL>MSULX
</CLASS-CONTRACT>
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000126911
<CLASS-CONTRACT-NAME>Class R6
<CLASS-CONTRACT-TICKER-SYMBOL>MURSX
</CLASS-CONTRACT>
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000155888
<CLASS-CONTRACT-NAME>Class C
<CLASS-CONTRACT-TICKER-SYMBOL>MSURX
</CLASS-CONTRACT>
</SERIES>
</EXISTING-SERIES-AND-CLASSES-CONTRACTS>
</SERIES-AND-CLASSES-CONTRACTS-DATA>
</SEC-HEADER>
<DOCUMENT>
<TYPE>497K
<SEQUENCE>1
<FILENAME>msifirp-html7844_497k.htm
<DESCRIPTION>MSIF U.S. REAL ESTATE PORTFOLIO - 497K
<TEXT>
Document 1 - file: msifirp-html7844_497k.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>2
<FILENAME>sp16160img002.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 2 - file: sp16160img002.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>3
<FILENAME>sp16160img003.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 3 - file: sp16160img003.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>4
<FILENAME>sp16160img001.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 4 - file: sp16160img001.jpg

</DOCUMENT>
</SEC-DOCUMENT>