OppenheimerFunds, Inc.
                                 Two World Financial Center
                               225 Liberty Street, 16th Floor
                               New York, New York 10281-1008


Randy Legg
Vice President &
   Assistant Counsel

December 2, 2005

VIA EDGAR

Securities and Exchange Commission
Mail Stop 0-7, Filer Support
6432 General Green Way
Alexandria, Virginia 22312

      Re:   Oppenheimer California Municipal Fund (the "Registrant")
            Reg. No. 33-23566; File No. 811-5586
            EDGAR Filing of Registration Statement

To the Securities and Exchange Commission:

      Pursuant  to Rule  497(j)  under the  Securities  Act of 1933,  as  amended,  I hereby
represent  that,  with respect to the Prospectus and Statement of Additional  Information of
the  Registrant,  dated  November 28,  2005, no changes were made to the  Prospectus and the
Statement of  Additional  Information  contained in  Post-Effective  Amendment No. 26 to the
Registrant's  Registration  Statement on Form N-1A, which was filed  electronically with the
Securities and Exchange Commission on November 23, 2005.

                                    Sincerely,

                                    /s/ Randy Legg
                                    ---------------------------------------
                                    Randy Legg
                                    303.768.1026
                                    rlegg@oppenheimerfunds.com

cc:  Douglas E. McCormack, Mayer, Brown, Rowe & Maw LLP
     Nicholas A. Austin, KPMG LLP
     Gloria LaFond
     Nancy S. Vann