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 L

<S>                             <C>
<PERIOD-TYPE>                   YEAR
<FISCAL-YEAR-END>                          MAR-31-1999
<PERIOD-END>                               MAR-31-1999
<INVESTMENTS-AT-COST>                      428,603,753
<INVESTMENTS-AT-VALUE>                     458,799,339
<RECEIVABLES>                                8,695,638
<ASSETS-OTHER>                                  33,251
<OTHER-ITEMS-ASSETS>                                 0
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<PAYABLE-FOR-SECURITIES>                     7,754,101
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                      297,105
<TOTAL-LIABILITIES>                          8,051,206
<SENIOR-EQUITY>                                      0
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<SHARES-COMMON-STOCK>                        1,325,875
<SHARES-COMMON-PRIOR>                        1,126,590
<ACCUMULATED-NII-CURRENT>                      (6,771)
<OVERDISTRIBUTION-NII>                               0
<ACCUMULATED-NET-GAINS>                        100,490
<OVERDISTRIBUTION-GAINS>                             0
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<NET-ASSETS>                               459,477,022
<DIVIDEND-INCOME>                                    0
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<OTHER-INCOME>                                       0
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<NET-INVESTMENT-INCOME>                     22,652,847
<REALIZED-GAINS-CURRENT>                     2,183,729
<APPREC-INCREASE-CURRENT>                  (2,091,457)
<NET-CHANGE-FROM-OPS>                       22,745,119
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                      797,008
<DISTRIBUTIONS-OF-GAINS>                       255,548
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                        361,021
<NUMBER-OF-SHARES-REDEEMED>                    211,749
<SHARES-REINVESTED>                             50,013
<NET-CHANGE-IN-ASSETS>                      52,325,345
<ACCUMULATED-NII-PRIOR>                        302,433
<ACCUMULATED-GAINS-PRIOR>                    4,285,154
<OVERDISTRIB-NII-PRIOR>                              0
<OVERDIST-NET-GAINS-PRIOR>                           0
<GROSS-ADVISORY-FEES>                        1,976,562
<INTEREST-EXPENSE>                                   0
<GROSS-EXPENSE>                              3,161,692
<AVERAGE-NET-ASSETS>                        17,247,796
<PER-SHARE-NAV-BEGIN>                            14.16
<PER-SHARE-NII>                                  00.65
<PER-SHARE-GAIN-APPREC>                          00.02
<PER-SHARE-DIVIDEND>                             00.65
<PER-SHARE-DISTRIBUTIONS>                        00.21
<RETURNS-OF-CAPITAL>                                 0
<PER-SHARE-NAV-END>                              13.97
<EXPENSE-RATIO>                                  01.24
[AVG-DEBT-OUTSTANDING]                               0
[AVG-DEBT-PER-SHARE]                                 0


</TABLE>