[ARTICLE] 6
[CIK] 0000775370
[NAME] SMITH BARNEY MUNI FUNDS
[SERIES]
   [NUMBER] 5
   [NAME] CALIFORNIA MONEY MARKET PORTFOLIO. CLASS Y
<TABLE>
<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
[SENIOR-LONG-TERM-DEBT]                              0
[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
[ACCUM-APPREC-OR-DEPREC]                             0
[NET-ASSETS]                             2,136,498,495
[DIVIDEND-INCOME]                                    0
[INTEREST-INCOME]                           61,440,871
[OTHER-INCOME]                                       0
[EXPENSES-NET]                              12,325,358
[NET-INVESTMENT-INCOME]                     49,115,513
[REALIZED-GAINS-CURRENT]                       153,566
[APPREC-INCREASE-CURRENT]                            0
[NET-CHANGE-FROM-OPS]                       49,269,079
[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
[OVERDIST-NET-GAINS-PRIOR]                           0
[GROSS-ADVISORY-FEES]                        9,619,316
[INTEREST-EXPENSE]                                   0
[GROSS-EXPENSE]                             12,325,358
[AVERAGE-NET-ASSETS]                            58,556
[PER-SHARE-NAV-BEGIN]                            1.000
[PER-SHARE-NII]                                  0.026
[PER-SHARE-GAIN-APPREC]                              0
[PER-SHARE-DIVIDEND]                             0.026
[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>