WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000355747
<NAME> SMITH BARNEY INVESTMENT FUNDS INC.
<SERIES>
   <NUMBER> 3
   <NAME> SMITH BARNEY PREMIER SELECTIONS FUND - CLASS A

<S>                             <C>
<PERIOD-TYPE>                   12-MOS
<FISCAL-YEAR-END>                          APR-30-2000
<PERIOD-END>                               APR-30-2000
<INVESTMENTS-AT-COST>                      729,247,971
<INVESTMENTS-AT-VALUE>                     782,546,706
<RECEIVABLES>                                3,164,836
<ASSETS-OTHER>                                     137
<OTHER-ITEMS-ASSETS>                                 0
<TOTAL-ASSETS>                             785,711,679
<PAYABLE-FOR-SECURITIES>                             0
<SENIOR-LONG-TERM-DEBT>                              0
<OTHER-ITEMS-LIABILITIES>                    1,834,096
<TOTAL-LIABILITIES>                          1,834,096
<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                   725,032,301
<SHARES-COMMON-STOCK>                       13,945,114
<SHARES-COMMON-PRIOR>                                0
<ACCUMULATED-NII-CURRENT>                            0
<OVERDISTRIBUTION-NII>                               0
<ACCUMULATED-NET-GAINS>                      5,573,547
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<DIVIDEND-INCOME>                            6,615,692
<INTEREST-INCOME>                              775,136
<OTHER-INCOME>                                       0
<EXPENSES-NET>                               8,960,420
<NET-INVESTMENT-INCOME>                    (1,569,592)
<REALIZED-GAINS-CURRENT>                     7,143,139
<APPREC-INCREASE-CURRENT>                   53,271,735
<NET-CHANGE-FROM-OPS>                       58,845,282
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                            0
<DISTRIBUTIONS-OF-GAINS>                             0
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                     16,500,035
<NUMBER-OF-SHARES-REDEEMED>                  2,554,921
<SHARES-REINVESTED>                                  0
<NET-CHANGE-IN-ASSETS>                     783,877,583
<ACCUMULATED-NII-PRIOR>                              0
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<INTEREST-EXPENSE>                                   0
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<AVERAGE-NET-ASSETS>                       172,291,706
<PER-SHARE-NAV-BEGIN>                            11.40
<PER-SHARE-NII>                                   0.02
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<RETURNS-OF-CAPITAL>                              0.00
<PER-SHARE-NAV-END>                              12.34
<EXPENSE-RATIO>                                   1.17


</TABLE>