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> 2
   <NAME> SMITH BARNEY SMALL CAP GROWTH - CLASS B

<S>                             <C>
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          SEP-30-2000
<PERIOD-END>                               MAR-31-2000
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<INVESTMENTS-AT-VALUE>                     254,001,574
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<SHARES-COMMON-STOCK>                        4,137,495
<SHARES-COMMON-PRIOR>                                0
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<EQUALIZATION>                                       0
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<EXPENSE-RATIO>                                   2.12


</TABLE>