August 31, 2005

Securities and Exchange Commission
Attn: Filing Desk, Stop 1-4
450 Fifth Street, N.W
Washington, DC 20549

RE:   Rule 17f-2
      The RBB Fund, Inc. -  Money Market Portfolio
      Registration No. 811-05518, CIK No. 0000831114

Ladies and Gentlemen:

On behalf of our client, THE RBB FUND, INC. - MONEY MARKET PORTFOLIO, we are
filing electronically one copy of the EDGARized version of our examination
report dated August 12, 2005, submitted pursuant to the requirements of
subsections (b) and (c) of Rule 17f-2 under the Investment Company Act of 1940
as of May 31, 2005.

Yours truly,

/s/ Tim Mundy

Tim Mundy
Partner


Enclosure


REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

To the Board of Directors of The RBB Fund, Inc.:


We have examined management's assertion included in the accompanying Management
Statement Regarding Compliance with Certain Provisions of the Investment Company
Act of 1940 that The RBB Fund, Inc. - Money Market Portfolio (the "Fund")
complied with the requirements of subsections (b) and (c) of Rule 17f-2 under
the Investment Company Act of 1940 ("the Act") as of May 31, 2005. Management is
responsible for the Fund's compliance with those requirements. Our
responsibility is to express an opinion on management's assertion about the
Fund's compliance based on our examination.

Our examination was conducted in accordance with attestation standards
established by the American Institute of Certified Public Accountants, as
adopted by the Public Company Accounting Oversight Board (United States), and,
accordingly, included examining, on a test basis, evidence about the Fund's
compliance with those requirements and performing such other procedures as we
considered necessary in the circumstances. Included among our procedures were
the following tests performed as of May 31, 2005, and with respect to agreement
of security purchases and sales, for the period from April 30, 2005 (the date of
the last examination) through May 31, 2005:

     o Count and inspection of all securities located in the vault of PNC Bank
       in Pittsburgh, Pennsylvania without prior notice to management;

     o Confirmation of all securities held by institutions in book entry form
       for the account of PNC Bank, (the "Custodian" of the Fund) by The
       Depository Trust Company, and The Federal Reserve System, agents of the
       Custodian;

     o Confirmation of all securities hypothecated, pledged, placed in escrow,
       or out for transfer with brokers, pledgees and/or transfer agents;

     o Reconciliation of all such securities to the books and records of the
       Fund and the Custodian;

     o Confirmation of all repurchase agreements with brokers/banks and
       agreement of underlying collateral with the Custodian's records; and

     o Agreement of 1 security purchase and 1 security sale or maturity since
       our last report from the books and records of the Fund to broker
       confirmations.


We believe that our examination provides a reasonable basis for our opinion. Our
examination does not provide a legal determination on the Fund's compliance with
specified requirements.

In our opinion, management's assertion that the Fund complied with the
requirements of subsections (b) and (c) of Rule 17f-2 of the Investment Company
Act of 1940 as of May 31, 2005 with respect to securities reflected in the
investment account of the Fund is fairly stated, in all material respects.

This report is intended solely for the information and use of management and the
Board of Directors of the Fund and the Securities and Exchange Commission and is
not intended to be and should not be used by anyone other than these specified
parties.



DELOITTE & TOUCHE LLP
Philadelphia, Pennsylvania
August 12, 2005



Management Statement Regarding Compliance With Certain Provisions of the
Investment Company Act of 1940



We, as members of management of The RBB Fund, Inc. - Money Market Portfolio (the
"Fund"), are responsible for complying with the requirements of subsections (b)
and (c) of rule 17f-2, "Custody of Investments by Registered Management
Investment Companies," of the Investment Company Act of 1940. We are also
responsible for establishing and maintaining effective internal controls over
compliance with those requirements. We have performed an evaluation of the
Fund's compliance with the requirements of subsections (b) and (c) of rule 17f-2
as of May 31, 2005, and from April 30, 2005 through May 31, 2005.

Based on this evaluation, we assert that the Fund was in compliance with the
requirements of subsections (b) and (c) of rule 17f-2 of the Investment Company
Act of 1940 as of May 31, 2005, and from April 30, 2005, through May 31, 2005,
with respect to securities reflected in the investment account of the Fund.



/s/ Edward J. Roach
- -----------------------------------------
Edward J. Roach
President & Treasurer, The RBB Fund, Inc.





                       UNITED STATES
            SECURITIES AND EXCHANGE COMMISSION
                  WASHINGTON, D.C. 20549

                       FORM N-17F-2

    Certificate of Accounting of Securities and Similar
               Investments in the Custody of
              Management Investment Companies

         Pursuant to Rule 17f-2 [17 CFR 270.17f-2]
- --------------------------------------------------------------------------------- ------------------------------------
                                                                                     
1.    Investment Company Act File Number:                                         Date examination completed:

811-05518                                                                         MAY 31, 2005

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2.    State identification Number:
      ----------------------------------------------------------------------------------------------------------------
      AL                 AK                 AZ                 AR                 CA                CO
      ------------------ ------------------ ------------------ ------------------ ----------------- ------------------
      CT                 DE                 DC                 FL                 GA                HI
      ------------------ ------------------ ------------------ ------------------ ----------------- ------------------
      ID                 IL                 IN                 IA                 KS                KY
      ------------------ ------------------ ------------------ ------------------ ----------------- ------------------
      LA                 ME                 MD                 MA                 MI                MN
      ------------------ ------------------ ------------------ ------------------ ----------------- ------------------
      MS                 MO                 MT                 NE                 NV                NH
      ------------------ ------------------ ------------------ ------------------ ----------------- ------------------
      NJ                 NM                 NY                 NC                 ND                OH
      ------------------ ------------------ ------------------ ------------------ ----------------- ------------------
      OK                 OR                 PA                 RI                 SC                SD
      ------------------ ------------------ ------------------ ------------------ ----------------- ------------------
      TN                 TX                 UT                 VT                 VA                WA
      ------------------ ------------------ ------------------ ------------------ ----------------- ------------------
      WV                 WI                 WY                 PUERTO RICO
      ----------------------------------------------------------------------------------------------------------------
      Other (specify):
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3.    Exact name of investment company as specified in registration statement: THE RBB FUND, INC.

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4.    Address of principal executive officer (number, street, city, state, zip code):

      400 Bellevue Parkway, Suite 100, Wilmington, DE, 19809
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