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> 1
   <NAME> NATIONAL PORTFOLIO. CLASS A
       
<S>                             <C>
<PERIOD-TYPE>                   YEAR
<FISCAL-YEAR-END>                          MAR-31-1998
<PERIOD-END>                               MAR-31-1998
<INVESTMENTS-AT-COST>                      381,105,910
<INVESTMENTS-AT-VALUE>                     413,689,953
<RECEIVABLES>                               25,118,862
<ASSETS-OTHER>                                  61,839
<OTHER-ITEMS-ASSETS>                                 0
<TOTAL-ASSETS>                             438,870,654
<PAYABLE-FOR-SECURITIES>                    31,290,746
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                      438,931
<TOTAL-LIABILITIES>                         31,729,677
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                   369,980,047
<SHARES-COMMON-STOCK>                       26,183,648
<SHARES-COMMON-PRIOR>                       25,835,550
<ACCUMULATED-NII-CURRENT>                      291,733
<OVERDISTRIBUTION-NII>                               0
<ACCUMULATED-NET-GAINS>                      4,285,154
<OVERDISTRIBUTION-GAINS>                             0
<ACCUM-APPREC-OR-DEPREC>                    32,584,043
<NET-ASSETS>                               407,140,977
<DIVIDEND-INCOME>                                    0
<INTEREST-INCOME>                           24,423,502
<OTHER-INCOME>                                       0
<EXPENSES-NET>                               2,782,492
<NET-INVESTMENT-INCOME>                     21,641,010
<REALIZED-GAINS-CURRENT>                    10,254,014
<APPREC-INCREASE-CURRENT>                    9,944,057
<NET-CHANGE-FROM-OPS>                       41,839,081
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                   20,499,080
<DISTRIBUTIONS-OF-GAINS>                     4,017,618
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                      4,494,238
<NUMBER-OF-SHARES-REDEEMED>                  5,066,000
<SHARES-REINVESTED>                            919,860
<NET-CHANGE-IN-ASSETS>                      28,154,458
<ACCUMULATED-NII-PRIOR>                        703,137
<ACCUMULATED-GAINS-PRIOR>                  (1,626,952)
<OVERDISTRIB-NII-PRIOR>                              0
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                        1,754,116
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                              2,785,492
<AVERAGE-NET-ASSETS>                       359,374,012
<PER-SHARE-NAV-BEGIN>                            13.60
<PER-SHARE-NII>                                  00.79
<PER-SHARE-GAIN-APPREC>                          00.73
<PER-SHARE-DIVIDEND>                             00.80
<PER-SHARE-DISTRIBUTIONS>                        00.16
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                              14.16
<EXPENSE-RATIO>                                  00.66
<AVG-DEBT-OUTSTANDING>                               0
<AVG-DEBT-PER-SHARE>                                 0
        

</TABLE>