[ARTICLE] 6
[CIK] 0000775370
[NAME] SMITH BARNEY MUNI FUNDS
[SERIES]
   [NUMBER] 1
   [NAME] NATIONAL PORTFOLIO, CLASS B
<TABLE>
<S>                             <C>
[PERIOD-TYPE]                   YEAR
[FISCAL-YEAR-END]                          MAR-31-1997
[PERIOD-END]                               MAR-31-1997
[INVESTMENTS-AT-COST]                      350,733,493
[INVESTMENTS-AT-VALUE]                     372,847,893
[RECEIVABLES]                                9,745,154
[ASSETS-OTHER]                                  87,638
[OTHER-ITEMS-ASSETS]                                 0
[TOTAL-ASSETS]                             382,680,685
[PAYABLE-FOR-SECURITIES]                     3,266,568
[SENIOR-LONG-TERM-DEBT]                              0
[OTHER-ITEMS-LIABILITIES]                      427,598
[TOTAL-LIABILITIES]                          3,694,166
[SENIOR-EQUITY]                                      0
[PAID-IN-CAPITAL-COMMON]                   357,795,934
[SHARES-COMMON-STOCK]                          932,399
[SHARES-COMMON-PRIOR]                          848,418
[ACCUMULATED-NII-CURRENT]                      703,137
[OVERDISTRIBUTION-NII]                               0
[ACCUMULATED-NET-GAINS]                    (1,626,952)
[OVERDISTRIBUTION-GAINS]                             0
[ACCUM-APPREC-OR-DEPREC]                    22,114,400
[NET-ASSETS]                               378,986,519
[DIVIDEND-INCOME]                                    0
[INTEREST-INCOME]                           26,191,894
[OTHER-INCOME]                                       0
[EXPENSES-NET]                               2,912,104
[NET-INVESTMENT-INCOME]                     23,279,790
[REALIZED-GAINS-CURRENT]                     2,704,354
[APPREC-INCREASE-CURRENT]                  (5,092,442)
[NET-CHANGE-FROM-OPS]                       20,891,702
[EQUALIZATION]                                       0
[DISTRIBUTIONS-OF-INCOME]                      651,978
[DISTRIBUTIONS-OF-GAINS]                             0
[DISTRIBUTIONS-OTHER]                                0
[NUMBER-OF-SHARES-SOLD]                        139,353
[NUMBER-OF-SHARES-REDEEMED]                     84,709
[SHARES-REINVESTED]                             29,337
[NET-CHANGE-IN-ASSETS]                      20,891,702
[ACCUMULATED-NII-PRIOR]                        114,578
[ACCUMULATED-GAINS-PRIOR]                  (4,331,306)
[OVERDISTRIB-NII-PRIOR]                              0
[OVERDIST-NET-GAINS-PRIOR]                           0
[GROSS-ADVISORY-FEES]                        1,780,788
[INTEREST-EXPENSE]                                   0
[GROSS-EXPENSE]                              2,912,104
[AVERAGE-NET-ASSETS]                        12,345,545
[PER-SHARE-NAV-BEGIN]                            13.67
[PER-SHARE-NII]                                  00.74
[PER-SHARE-GAIN-APPREC]                         (0.08)
[PER-SHARE-DIVIDEND]                             00.72
[PER-SHARE-DISTRIBUTIONS]                            0
[RETURNS-OF-CAPITAL]                                 0
[PER-SHARE-NAV-END]                              13.61
[EXPENSE-RATIO]                                  01.20
[AVG-DEBT-OUTSTANDING]                               0
[AVG-DEBT-PER-SHARE]                                 0
</TABLE>