OPPENHEIMER MONEY MARKET FUND, INC.
                     Supplement dated March 4, 2003 to the
          Statement of Additional Information dated September 24, 2002

      The Statement of Additional Information is changed as follows:

1.    The Supplement dated February 12, 2003 is replaced with this supplement.

2.    The section  captioned  "The  Fund's  Investment  Policies"  is amended as
    follows:

   a. The first  sentence of the last  paragraph  under that caption  "Rating of
      Securities--Portfolio  Quality, Maturity and Diversification" on page 2 is
      revised to read:

          "The    Rating    Organizations    currently    designated    as
          nationally-recognized  statistical  rating  organizations by the
          Securities  and  Exchange  Commission  are  Standard & Poor's (a
          division  of  the  McGraw-Hill  Companies),   Moody's  Investors
          Service,  Inc.,  Fitch,  Inc. and Dominion  Bond Rating  Service
          Limited."

   b. Add the following at the end of Appendix A:

          Dominion Bond Rating Service Limited ("DBRS")
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          R-1:  Short  term debt  rated  "R-1  (high)"  is of the  highest
          credit   quality,   and  indicates  an  entity  which  possesses
          unquestioned  ability to repay current  liabilities as they fall
          due.  Entities rated in this category  normally  maintain strong
          liquidity positions,  conservative debt levels and profitability
          which is both stable and above average.  Companies  achieving an
          "R-1 (high)" rating are normally  leaders in structurally  sound
          industry   segments  with  proven  track  records,   sustainable
          positive future results and no substantial  qualifying  negative
          factors.  Given the extremely  tough  definition  which DBRS has
          established for an "R-1 (high)",  few entities are strong enough
          to achieve this rating.  Short term debt rated "R-1 (middle)" is
          of superior  credit quality and, in most cases,  ratings in this
          category  differ  from  "R-1  (high)"  credits  to  only a small
          degree.  Given the extremely tough definition which DBRS has for
          the "R-1  (high)"  category  (which  few  companies  are able to
          achieve),  entities  rated "R-1  (middle)"  are also  considered
          strong credits which typically  exemplify above average strength
          in key areas of consideration  for debt  protection.  Short term
          debt rated "R-1 (low)" is of satisfactory  credit  quality.  The
          overall  strength  and  outlook  for  key  liquidity,  debt  and
          profitability  ratios  is not  normally  as  favorable  as  with
          higher rating  categories,  but these  considerations  are still
          respectable.  Any  qualifying  negative  factors which exist are
          considered manageable,  and the entity is normally of sufficient
          size to have some influence in its industry.

          R-2:  Short term debt rated "R-2" is of adequate  credit quality
          and within the three subset grades  (high,  middle,  low),  debt
          protection  ranges  from  having  reasonable  ability for timely
          repayment  to a level which is  considered  only just  adequate.
          The   liquidity  and  debt  ratios  of  entities  in  the  "R-2"
          classification   are  not  as  strong  as  those  in  the  "R-1"
          category,  and the past and future  trend may suggest  some risk
          of  maintaining  the  strength  of key  ratios  in these  areas.
          Alternative   sources  of  liquidity   support  are   considered
          satisfactory;  however,  even the  strongest  liquidity  support
          will not improve the commercial paper rating of the issuer.  The
          size  of the  entity  may  restrict  its  flexibility,  and  its
          relative  position in the industry is not typically as strong as
          the "R-1 credit".  Profitability trends, past and future, may be
          less  favorable,  earnings  not as  stable,  and there are often
          negative  qualifying  factors  present which could also make the
          entity  more  vulnerable  to adverse  changes in  financial  and
          economic conditions.

3.    The section  captioned  "Board of Director and  Oversight  Committees"  on
    page 10 is amended as follows:

   a. The second sentence of the second  paragraph under that caption is revised
      to read:

          "The  members of the Audit  Committee  are  Kenneth  A.  Randall
          (Chairman) and Edward Reagan."

   b. The first  sentence of the third  paragraph  under that caption is revised
      to read:

          "The  members  of  the  Study   Committee  are  Robert  G.  Galli
          (Chairman), Elizabeth Moynihan and Joel Motley."

4.    Effective  December 31, 2002,  Mr. Leon Levy resigned as a Director of the
    Fund  and  Mr.  Clayton  Yeutter  was  elected  as  Chairman  of the  Board,
    effective   January  1,  2003.   Therefore,   the  Statement  of  Additional
    Information  is revised by deleting  the  biography  for Mr. Levy on page 13
    and by adding the  following to Mr.  Yeutter's  biography:  "Chairman of the
    Board of Directors."

5.    In the  Director  compensation  table on page 18, the title of  "Chairman"
    after Mr.  Levy's name is deleted and the title of "Chairman" is added after
    Mr. Yeutter's name. In addition,  the following  footnote is added following
    Mr. Levy's name and following Mr. Yeutter's name:

      6.  Effective  January 1, 2003,  Clayton  Yeutter became Chairman of
          the Board of Directors of the Board I Funds upon the  retirement
          of Leon Levy.






6.    The  following is added at the end of the second  paragraph in the section
    titled "The Investment Advisory Agreement" starting on page 19:

          "With the addition of a new  breakpoint,  effective  December 12,
          2002,  those rates are  currently as follows:  0.45% of the first
          $500  million of  aggregate  net assets;  0.425% of the next $500
          million  of net  assets;  0.40% of the next $500  million  of net
          assets;  0.375% of the next $1.5 billion of net assets; and 0.35%
          of average annual net assets in excess of $3.0 billion."









March 4, 2003                                                PX200.011