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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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MIC-Info: RSA-MD5,RSA,
 RVNsTEXadXvfcfdH10aqdF1N+8Mpcn0vCMhYwBrjVHcH10R5IkQPc6c5CL3CoSIE
 CY/AlEYrb64pFXXE3uuDiQ==

<SEC-DOCUMENT>9999999995-06-001727.txt : 20061003
<SEC-HEADER>9999999995-06-001727.hdr.sgml : 20061003
<ACCEPTANCE-DATETIME>20061003001513
ACCESSION NUMBER:		9999999995-06-001727
CONFORMED SUBMISSION TYPE:	EFFECT
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20061002
DATE AS OF CHANGE:		20061003
EFFECTIVENESS DATE:		20061002

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Oppenheimer Institutional Money Market Fund
		CENTRAL INDEX KEY:			0001358587
		IRS NUMBER:				000000000
		STATE OF INCORPORATION:			MA
		FISCAL YEAR END:			0531

	FILING VALUES:
		FORM TYPE:		EFFECT
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	333-133173
		FILM NUMBER:		061122297

	BUSINESS ADDRESS:	
		STREET 1:		6803 SOUTH TUCSON WAY
		CITY:			CENTENNIAL
		STATE:			CO
		ZIP:			80112-3924
		BUSINESS PHONE:		1-303-768-3200

	MAIL ADDRESS:	
		STREET 1:		6803 SOUTH TUCSON WAY
		CITY:			CENTENNIAL
		STATE:			CO
		ZIP:			80112-3924
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<OWNER-CIK>0001358587
<SERIES-ID>S000012567
<SERIES-NAME>Oppenheimer Institutional Money Market Fund
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000034179
<CLASS-CONTRACT-NAME>E
</CLASS-CONTRACT>
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000034180
<CLASS-CONTRACT-NAME>L
</CLASS-CONTRACT>
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000034181
<CLASS-CONTRACT-NAME>P
</CLASS-CONTRACT>
</SERIES>
</EXISTING-SERIES-AND-CLASSES-CONTRACTS>
</SERIES-AND-CLASSES-CONTRACTS-DATA>
</SEC-HEADER>
<DOCUMENT>
<TYPE>EFFECT
<SEQUENCE>1
<FILENAME>primary_doc.xml
<TEXT>
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<?xml version="1.0"?>
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    <schemaVersion>X0101</schemaVersion>

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    <act>33</act>

    <testOrLive>LIVE</testOrLive>

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        <finalEffectivenessDispDate>2006-10-02</finalEffectivenessDispDate>
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            <entityName>Oppenheimer Institutional Money Market Fund</entityName>
            <fileNumber>333-133173</fileNumber>
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