497(j)


                    [Van Kampen Investments Inc. Letterhead]


                                                                October 5, 2009



Securities and Exchange Commission
100 F Street, N.E.
Washington, D.C. 20549-1004

   Re:  Van Kampen Money Market Fund -- Rule 497(j) Filing
        (File Nos. 002-50870 and 811-02482)

Ladies and Gentlemen:

     Van Kampen Money Market Fund filed via EDGAR on September 28, 2009 a copy
of Post-Effective Amendment No. 55 to the Registration Statement on Form N-1A
complete with exhibits filed therewith pursuant to Rule 485(b) of the general
rules and regulations (the "1933 Act Rules") of the Securities and Exchange
Commission promulgated under the Securities Act of 1933, as amended, and under
the Investment Company Act of 1940, as amended.

     In accordance with the provisions of Rule 497(j) of the 1933 Act Rules,
this letter serves to certify that the Prospectus and Statement of Additional
Information contained in the Registration Statement does not differ from that
which would have been filed pursuant to Rule 497(c) of the 1933 Act Rules.

     Should the staff have any questions regarding the foregoing, please call
me at (630) 684-6301 or Charles B. Taylor at (312) 407-0863.


                                                Very truly yours,



                                                /s/ Elizabeth Nelson
                                                -------------------------
                                                Elizabeth Nelson
                                                Assistant Secretary