[ARTICLE] 6
[CIK] 0000355747
[NAME] SMITH BARNEY INVESTMENT FUNDS INC.
[SERIES]
   [NUMBER] 3
   [NAME] GROWTH OPPORTUNITIES FUND. CLASS B
<TABLE>
<S>                             <C>
[PERIOD-TYPE]                   6-MOS
[FISCAL-YEAR-END]                          DEC-31-1997
[PERIOD-END]                               JUN-30-1997
[INVESTMENTS-AT-COST]                      118,316,750
[INVESTMENTS-AT-VALUE]                     118,148,736
[RECEIVABLES]                                  125,411
[ASSETS-OTHER]                                       0
[OTHER-ITEMS-ASSETS]                               852
[TOTAL-ASSETS]                             118,274,999
[PAYABLE-FOR-SECURITIES]                             0
[SENIOR-LONG-TERM-DEBT]                              0
[OTHER-ITEMS-LIABILITIES]                      341,248
[TOTAL-LIABILITIES]                            341,248
[SENIOR-EQUITY]                                      0
[PAID-IN-CAPITAL-COMMON]                   106,620,148
[SHARES-COMMON-STOCK]                        3,093,317
[SHARES-COMMON-PRIOR]                        3,140,115
[ACCUMULATED-NII-CURRENT]                            0
[OVERDISTRIBUTION-NII]                       (922,904)
[ACCUMULATED-NET-GAINS]                     12,295,527
[OVERDISTRIBUTION-GAINS]                             0
[ACCUM-APPREC-OR-DEPREC]                      (59,020)
[NET-ASSETS]                               117,933,751
[DIVIDEND-INCOME]                              458,750
[INTEREST-INCOME]                              642,502
[OTHER-INCOME]                                       0
[EXPENSES-NET]                               1,108,626
[NET-INVESTMENT-INCOME]                        (7,374)
[REALIZED-GAINS-CURRENT]                     8,250,689
[APPREC-INCREASE-CURRENT]                  (5,215,399)
[NET-CHANGE-FROM-OPS]                        3,027,916
[EQUALIZATION]                                       0
[DISTRIBUTIONS-OF-INCOME]                            0
[DISTRIBUTIONS-OF-GAINS]                             0
[DISTRIBUTIONS-OTHER]                                0
[NUMBER-OF-SHARES-SOLD]                        257,478
[NUMBER-OF-SHARES-REDEEMED]                    314,018
[SHARES-REINVESTED]                                  0
[NET-CHANGE-IN-ASSETS]                       2,432,054
[ACCUMULATED-NII-PRIOR]                              0
[ACCUMULATED-GAINS-PRIOR]                            0
[OVERDISTRIB-NII-PRIOR]                        915,530
[OVERDIST-NET-GAINS-PRIOR]                           0
[GROSS-ADVISORY-FEES]                          563,060
[INTEREST-EXPENSE]                                   0
[GROSS-EXPENSE]                                560,060
[AVERAGE-NET-ASSETS]                        42,015,048
[PER-SHARE-NAV-BEGIN]                            13.74
[PER-SHARE-NII]                                  00.03
[PER-SHARE-GAIN-APPREC]                          00.36
[PER-SHARE-DIVIDEND]                                 0
[PER-SHARE-DISTRIBUTIONS]                            0
[RETURNS-OF-CAPITAL]                                 0
[PER-SHARE-NAV-END]                              14.07
[EXPENSE-RATIO]                                  02.44
[AVG-DEBT-OUTSTANDING]                               0
[AVG-DEBT-PER-SHARE]                                 0
</TABLE>