<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
this schedule contains summary financial information extracted from financial
statements of Northwestern Mutual Series Fund, inc. International equity
portfolio June 30, 2000 ans is qualified in its entirety by reference to such
financial statements.
</LEGEND>
<SERIES>
<NUMBER> 03
<NAME> INTERNATIONAL EQUITY PORTFOLIO
<MULTIPLIER> 1000
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> DEC-31-1999
<PERIOD-END> JUN-30-2000
<INVESTMENTS-AT-COST> 706248
<INVESTMENTS-AT-VALUE> 825318
<RECEIVABLES> 3096
<ASSETS-OTHER> 66138
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 894552
<PAYABLE-FOR-SECURITIES> 16734
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 41896
<TOTAL-LIABILITIES> 58630
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 687333
<SHARES-COMMON-STOCK> 500776
<SHARES-COMMON-PRIOR> 433636
<ACCUMULATED-NII-CURRENT> 8454
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 21775
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 118360
<NET-ASSETS> 835922
<DIVIDEND-INCOME> 9821
<INTEREST-INCOME> 1549
<OTHER-INCOME> 0
<EXPENSES-NET> 2894
<NET-INVESTMENT-INCOME> 8476
<REALIZED-GAINS-CURRENT> 21803
<APPREC-INCREASE-CURRENT> (13617)
<NET-CHANGE-FROM-OPS> 16662
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 16173
<DISTRIBUTIONS-OF-GAINS> 41802
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 437225
<NUMBER-OF-SHARES-REDEEMED> 398842
<SHARES-REINVESTED> 37092
<NET-CHANGE-IN-ASSETS> 63752
<ACCUMULATED-NII-PRIOR> 16150
<ACCUMULATED-GAINS-PRIOR> 41774
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 2592
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 2894
<AVERAGE-NET-ASSETS> 0
<PER-SHARE-NAV-BEGIN> 1.78
<PER-SHARE-NII> 0.02
<PER-SHARE-GAIN-APPREC> (0.02)
<PER-SHARE-DIVIDEND> 0.03
<PER-SHARE-DISTRIBUTIONS> 0.08
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 1.67
<EXPENSE-RATIO> 0.74
</TABLE>
