G05-111-024-4/98
August 6, 1998
Filing Desk
Securities and Exchange Commission
Judiciary Plaza
450 Fifth Street, N.W.
Washington, D.C. 20549
Re: Dreyfus Institutional Preferred Money Market Fund
Registration Statement File Nos. 333-26513
CIK No. 1038520
Dear Sir/Madam:
Pursuant to Rule 497(j) under the Securities Act of 1933, this is to
certify that the form of Prospectus and Statement of Additional Information
that would have been filed under paragraph (b) or (c) of this section does
not differ from that contained in the most recent amendment to the Fund's
Registration Statement, electronically filed with the Securities and
Exchange Commission on July 29, 1998.
Very truly yours,
Judy Nieves
Paralegal
JN\
Enclosures
cc: Ernst & Young LLP
Stroock & Stroock & Lavan
Jeff Prusnofsky
