UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
Notice of Effectiveness
Effectiveness Date: October 2, 2006
Form: N-1A
CIK: 0001358587
Company Name: Oppenheimer Institutional Money Market Fund
File Number: 333-133173
REFERENCED SERIES/CLASSES (CONTRACTS)
Series ID
Class/Contract Name
S000012567 Oppenheimer Institutional Money Market Fund
C000034179 E
C000034180 L
C000034181 P