<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED
FROM THE SEMI-ANNUAL REPORT OF AMERICAN CENTURY WORLD MUTUAL FUNDS
AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH REPORT.
</LEGEND>
<CIK> 0000872825
<NAME> AMERICAN CENTURY WORLD MUTUAL FUNDS, INC.
<SERIES>
<NUMBER> 11
<NAME> INTERNATIONAL GROWTH FUND-INVESTOR CLASS
<MULTIPLIER> 1000
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> NOV-30-2000
<PERIOD-END> MAY-31-2000
<INVESTMENTS-AT-COST> 4,204,752
<INVESTMENTS-AT-VALUE> 5,302,940
<RECEIVABLES> 22,823
<ASSETS-OTHER> 26,731
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 5,352,494
<PAYABLE-FOR-SECURITIES> 201,045
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 5,124
<TOTAL-LIABILITIES> 206,169
<SENIOR-EQUITY> 3,416
<PAID-IN-CAPITAL-COMMON> 3,397,068
<SHARES-COMMON-STOCK> 341,550,542
<SHARES-COMMON-PRIOR> 284,335,795
<ACCUMULATED-NII-CURRENT> (2,942)
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 651,850
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 1,096,933
<NET-ASSETS> 5,146,325
<DIVIDEND-INCOME> 19,136
<INTEREST-INCOME> 8,332
<OTHER-INCOME> 0
<EXPENSES-NET> 30,358
<NET-INVESTMENT-INCOME> (2,890)
<REALIZED-GAINS-CURRENT> 672,439
<APPREC-INCREASE-CURRENT> (288,124)
<NET-CHANGE-FROM-OPS> 381,425
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (1,386)
<DISTRIBUTIONS-OF-GAINS> (206,126)
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 206,227
<NUMBER-OF-SHARES-REDEEMED> (162,040)
<SHARES-REINVESTED> 13,028
<NET-CHANGE-IN-ASSETS> 1,251,074
<ACCUMULATED-NII-PRIOR> (2,942)
<ACCUMULATED-GAINS-PRIOR> 651,850
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 30,078
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 30,358
<AVERAGE-NET-ASSETS> 4,711,795
<PER-SHARE-NAV-BEGIN> 13.02
<PER-SHARE-NII> (0.01)
<PER-SHARE-GAIN-APPREC> 1.41
<PER-SHARE-DIVIDEND> 0.01
<PER-SHARE-DISTRIBUTIONS> 0.72
<RETURNS-OF-CAPITAL> 0.00
<PER-SHARE-NAV-END> 13.69
<EXPENSE-RATIO> 1.20
</TABLE>
