<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
this schedule contains summary financial information extracted from mason street
funds, inc. international equity fund, 03/31/00 financial statements class b.
</LEGEND>
<CIK> 0001023744
<NAME> MASON STREET FUNDS, INC.
<SERIES>
<NUMBER> 112
<NAME> INTERNATIONAL EQUITY FUND CLASS B
<S> <C>
<PERIOD-TYPE> 12-MOS
<FISCAL-YEAR-END> MAR-31-2000
<PERIOD-START> APR-01-1999
<PERIOD-END> MAR-31-2000
<INVESTMENTS-AT-COST> 36742340
<INVESTMENTS-AT-VALUE> 38481790
<RECEIVABLES> 135462
<ASSETS-OTHER> 102698
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 38719950
<PAYABLE-FOR-SECURITIES> 236492
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 54197
<TOTAL-LIABILITIES> 290689
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 36326180
<SHARES-COMMON-STOCK> 390451
<SHARES-COMMON-PRIOR> 301149
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> 8186
<ACCUMULATED-NET-GAINS> 372783
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 1738484
<NET-ASSETS> 38429261
<DIVIDEND-INCOME> 847479
<INTEREST-INCOME> 113387
<OTHER-INCOME> 0
<EXPENSES-NET> 605939
<NET-INVESTMENT-INCOME> 354927
<REALIZED-GAINS-CURRENT> 1556223
<APPREC-INCREASE-CURRENT> 3468990
<NET-CHANGE-FROM-OPS> 5380140
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 29161
<DISTRIBUTIONS-OF-GAINS> 2499
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 136345
<NUMBER-OF-SHARES-REDEEMED> 499430
<SHARES-REINVESTED> 2900
<NET-CHANGE-IN-ASSETS> 7167587
<ACCUMULATED-NII-PRIOR> 72169
<ACCUMULATED-GAINS-PRIOR> (1147704)
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 300821
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 679908
<AVERAGE-NET-ASSETS> 0
<PER-SHARE-NAV-BEGIN> 9.03
<PER-SHARE-NII> 0.07
<PER-SHARE-GAIN-APPREC> 1.39
<PER-SHARE-DIVIDEND> 0.08
<PER-SHARE-DISTRIBUTIONS> 0.01
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 10.40
<EXPENSE-RATIO> 2.30
</TABLE>
