<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000831114
<NAME> THE RBB FUND, INC.
<SERIES>
<NUMBER> 062
<NAME> MUNICIPAL MONEY MARKET PORTFOLIO-CASH PRESERVATION CLASS
<S> <C>
<PERIOD-TYPE> YEAR
<FISCAL-YEAR-END> AUG-31-2000
<PERIOD-END> AUG-31-2000
<INVESTMENTS-AT-COST> 121320675
<INVESTMENTS-AT-VALUE> 121320675
<RECEIVABLES> 846289
<ASSETS-OTHER> 148830
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 122315794
<PAYABLE-FOR-SECURITIES> 0
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 26633
<TOTAL-LIABILITIES> 26633
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 122307654
<SHARES-COMMON-STOCK> 199255
<SHARES-COMMON-PRIOR> 214372
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> (18493)
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 0
<NET-ASSETS> 122289161
<DIVIDEND-INCOME> 0
<INTEREST-INCOME> 9003237
<OTHER-INCOME> 0
<EXPENSES-NET> (2044639)
<NET-INVESTMENT-INCOME> 6958598
<REALIZED-GAINS-CURRENT> 0
<APPREC-INCREASE-CURRENT> 0
<NET-CHANGE-FROM-OPS> 6958598
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (6360)
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 62468
<NUMBER-OF-SHARES-REDEEMED> (83714)
<SHARES-REINVESTED> 6129
<NET-CHANGE-IN-ASSETS> (142742303)
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 0
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 814139
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 2840874
<AVERAGE-NET-ASSETS> 232946274
<PER-SHARE-NAV-BEGIN> 1.00
<PER-SHARE-NII> .029
<PER-SHARE-GAIN-APPREC> 0
<PER-SHARE-DIVIDEND> (.029)
<PER-SHARE-DISTRIBUTIONS> 0
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 1.00
<EXPENSE-RATIO> .98
</TABLE>