[ARTICLE] 6
[CIK] 0000775370
[NAME] SMITH BARNEY MUNI FUNDS
[SERIES]
   [NUMBER] 5
   [NAME] CALIFORNIA MONEY MARKET PORTFOLIO, CLASS Y
<TABLE>
<S>                             <C>
[PERIOD-TYPE]                   6-MOS
[FISCAL-YEAR-END]                          MAR-31-1999
[PERIOD-END]                               SEP-30-1998
[INVESTMENTS-AT-COST]                    1,900,319,899
[INVESTMENTS-AT-VALUE]                   1,900,319,899
[RECEIVABLES]                               12,548,557
[ASSETS-OTHER]                                       0
[OTHER-ITEMS-ASSETS]                           211,420
[TOTAL-ASSETS]                           1,913,079,876
[PAYABLE-FOR-SECURITIES]                    58,370,839
[SENIOR-LONG-TERM-DEBT]                              0
[OTHER-ITEMS-LIABILITIES]                            0
[TOTAL-LIABILITIES]                         61,770,347
[SENIOR-EQUITY]                                      0
[PAID-IN-CAPITAL-COMMON]                 1,851,445,648
[SHARES-COMMON-STOCK]                            2,404
[SHARES-COMMON-PRIOR]                        3,413,145
[ACCUMULATED-NII-CURRENT]                            0
[OVERDISTRIBUTION-NII]                               0
[ACCUMULATED-NET-GAINS]                       (42,939)
[OVERDISTRIBUTION-GAINS]                             0
[ACCUM-APPREC-OR-DEPREC]                             0
[NET-ASSETS]                             1,851,309,529
[DIVIDEND-INCOME]                                    0
[INTEREST-INCOME]                           30,677,512
[OTHER-INCOME]                                       0
[EXPENSES-NET]                               5,733,564
[NET-INVESTMENT-INCOME]                     24,943,948
[REALIZED-GAINS-CURRENT]                       111,633
[APPREC-INCREASE-CURRENT]                            0
[NET-CHANGE-FROM-OPS]                       25,055,581
[EQUALIZATION]                                       0
[DISTRIBUTIONS-OF-INCOME]                        1,736
[DISTRIBUTIONS-OF-GAINS]                             0
[DISTRIBUTIONS-OTHER]                                0
[NUMBER-OF-SHARES-SOLD]                          8,477 
[NUMBER-OF-SHARES-REDEEMED]                  3,422,448
[SHARES-REINVESTED]                              3,229
[NET-CHANGE-IN-ASSETS]                      58,567,967
[ACCUMULATED-NII-PRIOR]                              0
[ACCUMULATED-GAINS-PRIOR]                            0
[OVERDISTRIB-NII-PRIOR]                              0
[OVERDIST-NET-GAINS-PRIOR]                           0
[GROSS-ADVISORY-FEES]                          448,711
[INTEREST-EXPENSE]                                   0
[GROSS-EXPENSE]                              5,733,564
[AVERAGE-NET-ASSETS]                           114,375
[PER-SHARE-NAV-BEGIN]                            1.000
[PER-SHARE-NII]                                  0.013
[PER-SHARE-GAIN-APPREC]                              0
[PER-SHARE-DIVIDEND]                             0.013
[PER-SHARE-DISTRIBUTIONS]                            0
[RETURNS-OF-CAPITAL]                                 0
[PER-SHARE-NAV-END]                              1.000
[EXPENSE-RATIO]                                  0.560
[AVG-DEBT-OUTSTANDING]                               0
[AVG-DEBT-PER-SHARE]                                 0
</TABLE>