WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000775370
<NAME> SMITH BARNEY MUNI FUNDS
<SERIES>
   <NUMBER> 5
   <NAME> CALIFORNIA MONEY MARKET PORTFOLIO. CLASS Y

<S>                             <C>
<PERIOD-TYPE>                   YEAR
<FISCAL-YEAR-END>                          MAR-31-1999
<PERIOD-END>                               MAR-31-1999
<INVESTMENTS-AT-COST>                    2,110,209,519
<INVESTMENTS-AT-VALUE>                   2,110,209,519
<RECEIVABLES>                               29,388,561
<ASSETS-OTHER>                                       0
<OTHER-ITEMS-ASSETS>                           384,371
<TOTAL-ASSETS>                           2,139,979,451
<PAYABLE-FOR-SECURITIES>                             0
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<OTHER-ITEMS-LIABILITIES>                    3,480,956
<TOTAL-LIABILITIES>                          3,480,956
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                 2,134,362,908
<SHARES-COMMON-STOCK>                            2,435
<SHARES-COMMON-PRIOR>                            2,404
<ACCUMULATED-NII-CURRENT>                            0
<OVERDISTRIBUTION-NII>                               0
<ACCUMULATED-NET-GAINS>                        (1,006)
<OVERDISTRIBUTION-GAINS>                             0
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<DIVIDEND-INCOME>                                    0
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<OTHER-INCOME>                                       0
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<NET-INVESTMENT-INCOME>                     49,115,513
<REALIZED-GAINS-CURRENT>                       153,566
<APPREC-INCREASE-CURRENT>                            0
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<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                           56
<DISTRIBUTIONS-OF-GAINS>                             0
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                          8,477
<NUMBER-OF-SHARES-REDEEMED>                  3,422,447
<SHARES-REINVESTED>                              3,260
<NET-CHANGE-IN-ASSETS>                     343,756,933
<ACCUMULATED-NII-PRIOR>                              0
<ACCUMULATED-GAINS-PRIOR>                            0
<OVERDISTRIB-NII-PRIOR>                              0
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<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                             12,325,358
<AVERAGE-NET-ASSETS>                            58,556
<PER-SHARE-NAV-BEGIN>                            1.000
<PER-SHARE-NII>                                  0.026
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<PER-SHARE-DISTRIBUTIONS>                            0
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                              1.000
<EXPENSE-RATIO>                                  0.510
[AVG-DEBT-OUTSTANDING]                               0
[AVG-DEBT-PER-SHARE]                                 0


</TABLE>