<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED
FROM THE 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> 13
<NAME> INTERNATIONAL GROWTH FUND ADVISOR CLASS
<S> <C>
<PERIOD-TYPE> YEAR
<FISCAL-YEAR-END> NOV-30-1999
<PERIOD-END> NOV-30-1999
<INVESTMENTS-AT-COST> 2,527,045,522
<INVESTMENTS-AT-VALUE> 3,912,053,881
<RECEIVABLES> 45,622,114
<ASSETS-OTHER> 405,390
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 3,958,081,385
<PAYABLE-FOR-SECURITIES> 44,656,685
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 18,173,856
<TOTAL-LIABILITIES> 62,830,541
<SENIOR-EQUITY> 47,189
<PAID-IN-CAPITAL-COMMON> 2,311,658,520
<SHARES-COMMON-STOCK> 4,718,909
<SHARES-COMMON-PRIOR> 3,238,586
<ACCUMULATED-NII-CURRENT> 1,682,440
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 196,806,221
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 1,385,056,474
<NET-ASSETS> 3,895,250,844
<DIVIDEND-INCOME> 31,994,584
<INTEREST-INCOME> 4,087,473
<OTHER-INCOME> 0
<EXPENSES-NET> 37,892,525
<NET-INVESTMENT-INCOME> (1,810,468)
<REALIZED-GAINS-CURRENT> 245,120,210
<APPREC-INCREASE-CURRENT> 927,334,433
<NET-CHANGE-FROM-OPS> 1,170,644,175
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 11,642
<DISTRIBUTIONS-OF-GAINS> 345,866
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 5,155,871
<NUMBER-OF-SHARES-REDEEMED> 2,817,059
<SHARES-REINVESTED> 38,171
<NET-CHANGE-IN-ASSETS> 1,411,891,941
<ACCUMULATED-NII-PRIOR> 7,217,326
<ACCUMULATED-GAINS-PRIOR> (8,120,195)
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 37,688,188
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 37,892,525
<AVERAGE-NET-ASSETS> 35,908,828
<PER-SHARE-NAV-BEGIN> 9.24
<PER-SHARE-NII> (0.04)
<PER-SHARE-GAIN-APPREC> 3.94
<PER-SHARE-DIVIDEND> 0.00
<PER-SHARE-DISTRIBUTIONS> 0.15
<RETURNS-OF-CAPITAL> 0.00
<PER-SHARE-NAV-END> 12.99
<EXPENSE-RATIO> 1.52
</TABLE>
