AMERICAN CENTURY WORLD MUTUAL FUNDS INC
NSAR-A, 1999-07-29
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<PAGE>      PAGE  1
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001 A000000 AMERICAN CENTURY WORLD MUTUAL FUNDS, INC.
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002 B000000 KANSAS CITY
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007 C020300 EMERGING MARKETS FUND
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008 A00AA01 AMERICAN CENTURY INVESTMENT MANAGEMENT, INC.
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008 D04AA01 7709
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010 C03AA01 64111
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010 A00AA02 FUNDS DISTRIBUTOR, INC.
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010 C01AA02 BOSTON
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011 A00AA01 FUNDS DISTRIBUTOR, INC.
011 B00AA01 8-20518
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011 A00AA02 AMERICAN CENTURY INVESTMENT SERVICES, INC.
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<PAGE>      PAGE  3
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<PAGE>      PAGE  4
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<PAGE>      PAGE  6
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<PAGE>      PAGE  7
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<PAGE>      PAGE  8
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<PAGE>      PAGE  9
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<PAGE>      PAGE  11
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<PAGE>      PAGE  13
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<PAGE>      PAGE  17
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028 B010400     14928
028 B020400         0
028 B030400         0
028 B040400      3448
028 C010400      9577
<PAGE>      PAGE  19
028 C020400         0
028 C030400         0
028 C040400      3192
028 D010400      9780
028 D020400         0
028 D030400         0
028 D040400      5874
028 E010400     11932
028 E020400         0
028 E030400         0
028 E040400      4904
028 F010400     11692
028 F020400         0
028 F030400         0
028 F040400      3128
028 G010400    129914
028 G020400         0
028 G030400         0
028 G040400     25122
028 H000400         0
042 A000400   0
042 B000400   0
042 C000400   0
042 D000400   0
042 E000400   0
042 F000400   0
042 G000400   0
042 H000400   0
043  000400      0
044  000400      0
045  000400 Y
046  000400 N
047  000400 Y
048  000400  0.000
048 A010400  1000000
048 A020400 1.300
048 B010400  1000000
048 B020400 1.150
048 C010400        0
048 C020400 0.000
048 D010400        0
048 D020400 0.000
048 E010400        0
048 E020400 0.000
048 F010400        0
048 F020400 0.000
048 G010400        0
048 G020400 0.000
048 H010400        0
048 H020400 0.000
048 I010400        0
<PAGE>      PAGE  20
048 I020400 0.000
048 J010400        0
048 J020400 0.000
048 K010400  2000000
048 K020400 1.050
055 A000400 Y
055 B000400 N
056  000400 Y
057  000400 N
058 A000400 N
059  000400 Y
060 A000400 Y
060 B000400 Y
061  000400     2500
070 A010400 Y
070 A020400 Y
070 B010400 Y
070 B020400 N
070 C010400 Y
070 C020400 N
070 D010400 Y
070 D020400 N
070 E010400 N
070 E020400 N
070 F010400 Y
070 F020400 N
070 G010400 Y
070 G020400 N
070 H010400 Y
070 H020400 N
070 I010400 N
070 I020400 N
070 J010400 Y
070 J020400 N
070 K010400 Y
070 K020400 N
070 L010400 Y
070 L020400 N
070 M010400 Y
070 M020400 N
070 N010400 Y
070 N020400 N
070 O010400 N
070 O020400 N
070 P010400 Y
070 P020400 N
070 Q010400 N
070 Q020400 N
070 R010400 Y
070 R020400 N
071 A000400    155781
<PAGE>      PAGE  21
071 B000400     61015
071 C000400     93538
071 D000400   65
072 A000400  6
072 B000400      148
072 C000400      546
072 D000400        0
072 E000400        0
072 F000400      602
072 G000400        0
072 H000400        0
072 I000400        0
072 J000400        0
072 K000400        0
072 L000400        0
072 M000400        0
072 N000400        0
072 O000400        0
072 P000400        0
072 Q000400        0
072 R000400        0
072 S000400        0
072 T000400        0
072 U000400        0
072 V000400        0
072 W000400        0
072 X000400      602
072 Y000400        0
072 Z000400       92
072AA000400     3506
072BB000400        0
072CC010400     9593
072CC020400        0
072DD010400        0
072DD020400        0
072EE000400        0
073 A010400   0.0000
073 A020400   0.0000
073 B000400   0.0000
073 C000400   0.0000
074 A000400     1806
074 B000400     5800
074 C000400     2600
074 D000400        0
074 E000400     1117
074 F000400   106597
074 G000400        0
074 H000400        0
074 I000400        0
074 J000400     1745
074 K000400        0
<PAGE>      PAGE  22
074 L000400      268
074 M000400     1373
074 N000400   121305
074 O000400     3193
074 P000400      128
074 Q000400        0
074 R010400        0
074 R020400        0
074 R030400        0
074 R040400        0
074 S000400        0
074 T000400   117984
074 U010400    19873
074 U020400       11
074 V010400     5.93
074 V020400     5.93
074 W000400   0.0000
074 X000400    14101
074 Y000400        0
075 A000400        0
075 B000400    92814
076  000400     0.00
SIGNATURE   MARYANNE ROEPKE
TITLE       TREASURER
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.

<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> 13
   <NAME> INTERNATIONAL GROWTH FUND ADVISOR CLASS

<S>                                           <C>
<PERIOD-TYPE>                                   6-MOS
<FISCAL-YEAR-END>                               NOV-30-1999
<PERIOD-END>                                    MAY-31-1999
<INVESTMENTS-AT-COST>                                       2,244,102,855
<INVESTMENTS-AT-VALUE>                                      2,786,574,487
<RECEIVABLES>                                                  29,495,533
<ASSETS-OTHER>                                                  9,596,214
<OTHER-ITEMS-ASSETS>                                                    0
<TOTAL-ASSETS>                                              2,825,666,234
<PAYABLE-FOR-SECURITIES>                                        8,979,558
<SENIOR-LONG-TERM-DEBT>                                                 0
<OTHER-ITEMS-LIABILITIES>                                       3,293,479
<TOTAL-LIABILITIES>                                            12,273,037
<SENIOR-EQUITY>                                                 2,891,057
<PAID-IN-CAPITAL-COMMON>                                    2,211,862,806
<SHARES-COMMON-STOCK>                                           3,238,586
<SHARES-COMMON-PRIOR>                                           2,341,926
<ACCUMULATED-NII-CURRENT>                                       5,392,048
<OVERDISTRIBUTION-NII>                                                  0
<ACCUMULATED-NET-GAINS>                                        49,536,635
<OVERDISTRIBUTION-GAINS>                                                0
<ACCUM-APPREC-OR-DEPREC>                                      543,710,651
<NET-ASSETS>                                                2,813,393,197
<DIVIDEND-INCOME>                                              20,832,476
<INTEREST-INCOME>                                               2,243,491
<OTHER-INCOME>                                                          0
<EXPENSES-NET>                                                 17,812,747
<NET-INVESTMENT-INCOME>                                         5,263,220
<REALIZED-GAINS-CURRENT>                                       94,486,022
<APPREC-INCREASE-CURRENT>                                      85,988,610
<NET-CHANGE-FROM-OPS>                                         185,737,852
<EQUALIZATION>                                                          0
<DISTRIBUTIONS-OF-INCOME>                                          11,642
<DISTRIBUTIONS-OF-GAINS>                                          345,866
<DISTRIBUTIONS-OTHER>                                                   0
<NUMBER-OF-SHARES-SOLD>                                         1,928,030
<NUMBER-OF-SHARES-REDEEMED>                                     1,069,541
<SHARES-REINVESTED>                                                38,171
<NET-CHANGE-IN-ASSETS>                                        330,034,294
<ACCUMULATED-NII-PRIOR>                                         7,217,326
<ACCUMULATED-GAINS-PRIOR>                                      (8,120,195)
<OVERDISTRIB-NII-PRIOR>                                                 0
<OVERDIST-NET-GAINS-PRIOR>                                              0
<GROSS-ADVISORY-FEES>                                          17,733,214
<INTEREST-EXPENSE>                                                      0
<GROSS-EXPENSE>                                                17,812,747
<AVERAGE-NET-ASSETS>                                           27,711,495
<PER-SHARE-NAV-BEGIN>                                                9.24
<PER-SHARE-NII>                                                      0.01
<PER-SHARE-GAIN-APPREC>                                              0.63
<PER-SHARE-DIVIDEND>                                                 0.01
<PER-SHARE-DISTRIBUTIONS>                                            0.15
<RETURNS-OF-CAPITAL>                                                 0.00
<PER-SHARE-NAV-END>                                                  9.72
<EXPENSE-RATIO>                                                      1.53
[AVG-DEBT-OUTSTANDING]                                                  0
[AVG-DEBT-PER-SHARE]                                                 0.00


</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.

<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> 12
   <NAME> INTERNATIONAL GROWTH FUND INSTITUTIONAL CLASS

<S>                                           <C>
<PERIOD-TYPE>                                   6-MOS
<FISCAL-YEAR-END>                               NOV-30-1999
<PERIOD-END>                                    MAY-31-1999
<INVESTMENTS-AT-COST>                                       2,244,102,855
<INVESTMENTS-AT-VALUE>                                      2,786,574,487
<RECEIVABLES>                                                  29,495,533
<ASSETS-OTHER>                                                  9,596,214
<OTHER-ITEMS-ASSETS>                                                    0
<TOTAL-ASSETS>                                              2,825,666,234
<PAYABLE-FOR-SECURITIES>                                        8,979,558
<SENIOR-LONG-TERM-DEBT>                                                 0
<OTHER-ITEMS-LIABILITIES>                                       3,293,479
<TOTAL-LIABILITIES>                                            12,273,037
<SENIOR-EQUITY>                                                 2,891,057
<PAID-IN-CAPITAL-COMMON>                                    2,211,862,806
<SHARES-COMMON-STOCK>                                           3,436,649
<SHARES-COMMON-PRIOR>                                           1,462,182
<ACCUMULATED-NII-CURRENT>                                       5,392,048
<OVERDISTRIBUTION-NII>                                                  0
<ACCUMULATED-NET-GAINS>                                        49,536,635
<OVERDISTRIBUTION-GAINS>                                                0
<ACCUM-APPREC-OR-DEPREC>                                      543,710,651
<NET-ASSETS>                                                2,813,393,197
<DIVIDEND-INCOME>                                              20,832,476
<INTEREST-INCOME>                                               2,243,491
<OTHER-INCOME>                                                          0
<EXPENSES-NET>                                                 17,812,747
<NET-INVESTMENT-INCOME>                                         5,263,220
<REALIZED-GAINS-CURRENT>                                       94,486,022
<APPREC-INCREASE-CURRENT>                                      85,988,610
<NET-CHANGE-FROM-OPS>                                         185,737,852
<EQUALIZATION>                                                          0
<DISTRIBUTIONS-OF-INCOME>                                          57,931
<DISTRIBUTIONS-OF-GAINS>                                          225,320
<DISTRIBUTIONS-OTHER>                                                   0
<NUMBER-OF-SHARES-SOLD>                                         3,820,579
<NUMBER-OF-SHARES-REDEEMED>                                     1,875,075
<SHARES-REINVESTED>                                                28,963
<NET-CHANGE-IN-ASSETS>                                        330,034,294
<ACCUMULATED-NII-PRIOR>                                         7,217,326
<ACCUMULATED-GAINS-PRIOR>                                      (8,120,195)
<OVERDISTRIB-NII-PRIOR>                                                 0
<OVERDIST-NET-GAINS-PRIOR>                                              0
<GROSS-ADVISORY-FEES>                                          17,733,214
<INTEREST-EXPENSE>                                                      0
<GROSS-EXPENSE>                                                17,812,747
<AVERAGE-NET-ASSETS>                                           23,122,522
<PER-SHARE-NAV-BEGIN>                                                9.28
<PER-SHARE-NII>                                                      0.04
<PER-SHARE-GAIN-APPREC>                                              0.61
<PER-SHARE-DIVIDEND>                                                 0.04
<PER-SHARE-DISTRIBUTIONS>                                            0.15
<RETURNS-OF-CAPITAL>                                                 0.00
<PER-SHARE-NAV-END>                                                  9.74
<EXPENSE-RATIO>                                                      1.08
[AVG-DEBT-OUTSTANDING]                                                  0
[AVG-DEBT-PER-SHARE]                                                 0.00


</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.

<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

<S>                                           <C>
<PERIOD-TYPE>                                   6-MOS
<FISCAL-YEAR-END>                               NOV-30-1999
<PERIOD-END>                                    MAY-31-1999
<INVESTMENTS-AT-COST>                                       2,244,102,855
<INVESTMENTS-AT-VALUE>                                      2,786,574,487
<RECEIVABLES>                                                  29,495,533
<ASSETS-OTHER>                                                  9,596,214
<OTHER-ITEMS-ASSETS>                                                    0
<TOTAL-ASSETS>                                              2,825,666,234
<PAYABLE-FOR-SECURITIES>                                        8,979,558
<SENIOR-LONG-TERM-DEBT>                                                 0
<OTHER-ITEMS-LIABILITIES>                                       3,293,479
<TOTAL-LIABILITIES>                                            12,273,037
<SENIOR-EQUITY>                                                 2,891,057
<PAID-IN-CAPITAL-COMMON>                                    2,211,862,806
<SHARES-COMMON-STOCK>                                         282,430,446
<SHARES-COMMON-PRIOR>                                         264,564,244
<ACCUMULATED-NII-CURRENT>                                       5,392,048
<OVERDISTRIBUTION-NII>                                                  0
<ACCUMULATED-NET-GAINS>                                        49,536,635
<OVERDISTRIBUTION-GAINS>                                                0
<ACCUM-APPREC-OR-DEPREC>                                      543,710,651
<NET-ASSETS>                                                2,813,393,197
<DIVIDEND-INCOME>                                              20,832,476
<INTEREST-INCOME>                                               2,243,491
<OTHER-INCOME>                                                          0
<EXPENSES-NET>                                                 17,812,747
<NET-INVESTMENT-INCOME>                                         5,263,220
<REALIZED-GAINS-CURRENT>                                       94,486,022
<APPREC-INCREASE-CURRENT>                                      85,988,610
<NET-CHANGE-FROM-OPS>                                         185,737,852
<EQUALIZATION>                                                          0
<DISTRIBUTIONS-OF-INCOME>                                       4,441,369
<DISTRIBUTIONS-OF-GAINS>                                       38,835,562
<DISTRIBUTIONS-OTHER>                                                   0
<NUMBER-OF-SHARES-SOLD>                                       167,288,286
<NUMBER-OF-SHARES-REDEEMED>                                   153,568,391
<SHARES-REINVESTED>                                             4,146,307
<NET-CHANGE-IN-ASSETS>                                        330,034,294
<ACCUMULATED-NII-PRIOR>                                         7,217,326
<ACCUMULATED-GAINS-PRIOR>                                      (8,120,195)
<OVERDISTRIB-NII-PRIOR>                                                 0
<OVERDIST-NET-GAINS-PRIOR>                                              0
<GROSS-ADVISORY-FEES>                                          17,733,214
<INTEREST-EXPENSE>                                                      0
<GROSS-EXPENSE>                                                17,812,747
<AVERAGE-NET-ASSETS>                                        2,736,859,778
<PER-SHARE-NAV-BEGIN>                                                9.25
<PER-SHARE-NII>                                                      0.02
<PER-SHARE-GAIN-APPREC>                                              0.63
<PER-SHARE-DIVIDEND>                                                 0.02
<PER-SHARE-DISTRIBUTIONS>                                            0.00
<RETURNS-OF-CAPITAL>                                                 0.15
<PER-SHARE-NAV-END>                                                  9.73
<EXPENSE-RATIO>                                                      1.28
[AVG-DEBT-OUTSTANDING]                                                  0
[AVG-DEBT-PER-SHARE]                                                 0.00


</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.

<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> 23
   <NAME> INTERNATIONAL DISCOVERY FUND ADVISOR CLASS

<S>                                           <C>
<PERIOD-TYPE>                                6-MOS
<FISCAL-YEAR-END>                            NOV-30-1999
<PERIOD-END>                                 MAY-31-1999
<INVESTMENTS-AT-COST>                                      723,470,225
<INVESTMENTS-AT-VALUE>                                   1,001,360,667
<RECEIVABLES>                                               14,749,532
<ASSETS-OTHER>                                                       0
<OTHER-ITEMS-ASSETS>                                                 0
<TOTAL-ASSETS>                                           1,016,110,199
<PAYABLE-FOR-SECURITIES>                                    29,031,896
<SENIOR-LONG-TERM-DEBT>                                              0
<OTHER-ITEMS-LIABILITIES>                                    2,108,935
<TOTAL-LIABILITIES>                                         31,140,831
<SENIOR-EQUITY>                                                920,154
<PAID-IN-CAPITAL-COMMON>                                   687,304,987
<SHARES-COMMON-STOCK>                                            1,754
<SHARES-COMMON-PRIOR>                                            1,162
<ACCUMULATED-NII-CURRENT>                                   (3,102,721)
<OVERDISTRIBUTION-NII>                                               0
<ACCUMULATED-NET-GAINS>                                     21,552,490
<OVERDISTRIBUTION-GAINS>                                             0
<ACCUM-APPREC-OR-DEPREC>                                   278,294,458
<NET-ASSETS>                                               984,969,368
<DIVIDEND-INCOME>                                            3,226,242
<INTEREST-INCOME>                                              958,570
<OTHER-INCOME>                                                       0
<EXPENSES-NET>                                               7,144,661
<NET-INVESTMENT-INCOME>                                     (2,959,849)
<REALIZED-GAINS-CURRENT>                                    31,291,648
<APPREC-INCREASE-CURRENT>                                  106,059,327
<NET-CHANGE-FROM-OPS>                                      134,391,126
<EQUALIZATION>                                                       0
<DISTRIBUTIONS-OF-INCOME>                                            0
<DISTRIBUTIONS-OF-GAINS>                                            40
<DISTRIBUTIONS-OTHER>                                                0
<NUMBER-OF-SHARES-SOLD>                                            588
<NUMBER-OF-SHARES-REDEEMED>                                          0
<SHARES-REINVESTED>                                                  4
<NET-CHANGE-IN-ASSETS>                                     142,488,821
<ACCUMULATED-NII-PRIOR>                                     (2,824,215)
<ACCUMULATED-GAINS-PRIOR>                                   (8,674,974)
<OVERDISTRIB-NII-PRIOR>                                              0
<OVERDIST-NET-GAINS-PRIOR>                                           0
<GROSS-ADVISORY-FEES>                                        7,141,286
<INTEREST-EXPENSE>                                                   0
<GROSS-EXPENSE>                                              7,144,661
<AVERAGE-NET-ASSETS>                                            13,804
<PER-SHARE-NAV-BEGIN>                                             9.22
<PER-SHARE-NII>                                                  (0.04)
<PER-SHARE-GAIN-APPREC>                                           1.52
<PER-SHARE-DIVIDEND>                                              0.00
<PER-SHARE-DISTRIBUTIONS>                                         0.03
<RETURNS-OF-CAPITAL>                                              0.00
<PER-SHARE-NAV-END>                                              10.67
<EXPENSE-RATIO>                                                   1.84
[AVG-DEBT-OUTSTANDING]                                               0
[AVG-DEBT-PER-SHARE]                                              0.00


</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.

<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> 22
   <NAME> INTERNATIONAL DISCOVERY FUND INSTITUTIONAL CLASS

<S>                                           <C>
<PERIOD-TYPE>                                6-MOS
<FISCAL-YEAR-END>                            NOV-30-1999
<PERIOD-END>                                 MAY-31-1999
<INVESTMENTS-AT-COST>                                      723,470,225
<INVESTMENTS-AT-VALUE>                                   1,001,360,667
<RECEIVABLES>                                               14,749,532
<ASSETS-OTHER>                                                       0
<OTHER-ITEMS-ASSETS>                                                 0
<TOTAL-ASSETS>                                           1,016,110,199
<PAYABLE-FOR-SECURITIES>                                    29,031,896
<SENIOR-LONG-TERM-DEBT>                                              0
<OTHER-ITEMS-LIABILITIES>                                    2,108,935
<TOTAL-LIABILITIES>                                         31,140,831
<SENIOR-EQUITY>                                                920,154
<PAID-IN-CAPITAL-COMMON>                                   687,304,987
<SHARES-COMMON-STOCK>                                       11,069,870
<SHARES-COMMON-PRIOR>                                        6,589,252
<ACCUMULATED-NII-CURRENT>                                   (3,102,721)
<OVERDISTRIBUTION-NII>                                               0
<ACCUMULATED-NET-GAINS>                                     21,552,490
<OVERDISTRIBUTION-GAINS>                                             0
<ACCUM-APPREC-OR-DEPREC>                                   278,294,458
<NET-ASSETS>                                               984,969,368
<DIVIDEND-INCOME>                                            3,226,242
<INTEREST-INCOME>                                              958,570
<OTHER-INCOME>                                                       0
<EXPENSES-NET>                                               7,144,661
<NET-INVESTMENT-INCOME>                                     (2,959,849)
<REALIZED-GAINS-CURRENT>                                    31,291,648
<APPREC-INCREASE-CURRENT>                                  106,059,327
<NET-CHANGE-FROM-OPS>                                      134,391,126
<EQUALIZATION>                                                       0
<DISTRIBUTIONS-OF-INCOME>                                            0
<DISTRIBUTIONS-OF-GAINS>                                       229,210
<DISTRIBUTIONS-OTHER>                                                0
<NUMBER-OF-SHARES-SOLD>                                      5,138,927
<NUMBER-OF-SHARES-REDEEMED>                                    683,277
<SHARES-REINVESTED>                                             24,968
<NET-CHANGE-IN-ASSETS>                                     142,488,821
<ACCUMULATED-NII-PRIOR>                                     (2,824,215)
<ACCUMULATED-GAINS-PRIOR>                                   (8,674,974)
<OVERDISTRIB-NII-PRIOR>                                              0
<OVERDIST-NET-GAINS-PRIOR>                                           0
<GROSS-ADVISORY-FEES>                                        7,141,286
<INTEREST-EXPENSE>                                                   0
<GROSS-EXPENSE>                                              7,144,661
<AVERAGE-NET-ASSETS>                                        86,907,019
<PER-SHARE-NAV-BEGIN>                                             9.25
<PER-SHARE-NII>                                                  (0.01)
<PER-SHARE-GAIN-APPREC>                                           1.51
<PER-SHARE-DIVIDEND>                                              0.00
<PER-SHARE-DISTRIBUTIONS>                                         0.03
<RETURNS-OF-CAPITAL>                                              0.00
<PER-SHARE-NAV-END>                                              10.72
<EXPENSE-RATIO>                                                   1.39
[AVG-DEBT-OUTSTANDING]                                               0
[AVG-DEBT-PER-SHARE]                                              0.00


</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.

<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> 21
   <NAME> INTERNATIONAL DISCOVERY FUND INVESTOR CLASS

<S>                                           <C>
<PERIOD-TYPE>                                6-MOS
<FISCAL-YEAR-END>                            NOV-30-1999
<PERIOD-END>                                 MAY-31-1999
<INVESTMENTS-AT-COST>                                      723,470,225
<INVESTMENTS-AT-VALUE>                                   1,001,360,667
<RECEIVABLES>                                               14,749,532
<ASSETS-OTHER>                                                       0
<OTHER-ITEMS-ASSETS>                                                 0
<TOTAL-ASSETS>                                           1,016,110,199
<PAYABLE-FOR-SECURITIES>                                    29,031,896
<SENIOR-LONG-TERM-DEBT>                                              0
<OTHER-ITEMS-LIABILITIES>                                    2,108,935
<TOTAL-LIABILITIES>                                         31,140,831
<SENIOR-EQUITY>                                                920,154
<PAID-IN-CAPITAL-COMMON>                                   687,304,987
<SHARES-COMMON-STOCK>                                       80,943,784
<SHARES-COMMON-PRIOR>                                       84,567,310
<ACCUMULATED-NII-CURRENT>                                   (3,102,721)
<OVERDISTRIBUTION-NII>                                               0
<ACCUMULATED-NET-GAINS>                                     21,552,490
<OVERDISTRIBUTION-GAINS>                                             0
<ACCUM-APPREC-OR-DEPREC>                                   278,294,458
<NET-ASSETS>                                               984,969,368
<DIVIDEND-INCOME>                                            3,226,242
<INTEREST-INCOME>                                              958,570
<OTHER-INCOME>                                                       0
<EXPENSES-NET>                                               7,144,661
<NET-INVESTMENT-INCOME>                                     (2,959,849)
<REALIZED-GAINS-CURRENT>                                    31,291,648
<APPREC-INCREASE-CURRENT>                                  106,059,327
<NET-CHANGE-FROM-OPS>                                      134,391,126
<EQUALIZATION>                                                       0
<DISTRIBUTIONS-OF-INCOME>                                            0
<DISTRIBUTIONS-OF-GAINS>                                     2,870,478
<DISTRIBUTIONS-OTHER>                                                0
<NUMBER-OF-SHARES-SOLD>                                     13,691,484
<NUMBER-OF-SHARES-REDEEMED>                                 17,607,639
<SHARES-REINVESTED>                                            292,629
<NET-CHANGE-IN-ASSETS>                                     142,488,821
<ACCUMULATED-NII-PRIOR>                                     (2,824,215)
<ACCUMULATED-GAINS-PRIOR>                                   (8,674,974)
<OVERDISTRIB-NII-PRIOR>                                              0
<OVERDIST-NET-GAINS-PRIOR>                                           0
<GROSS-ADVISORY-FEES>                                        7,141,286
<INTEREST-EXPENSE>                                                   0
<GROSS-EXPENSE>                                              7,144,661
<AVERAGE-NET-ASSETS>                                       823,140,970
<PER-SHARE-NAV-BEGIN>                                             9.24
<PER-SHARE-NII>                                                  (0.03)
<PER-SHARE-GAIN-APPREC>                                           1.52
<PER-SHARE-DIVIDEND>                                              0.00
<PER-SHARE-DISTRIBUTIONS>                                         0.03
<RETURNS-OF-CAPITAL>                                              0.00
<PER-SHARE-NAV-END>                                              10.70
<EXPENSE-RATIO>                                                   1.59
[AVG-DEBT-OUTSTANDING]                                               0
[AVG-DEBT-PER-SHARE]                                              0.00


</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.

<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> 33
   <NAME> EMERGING MARKETS ADVISOR CLASS

<S>                                           <C>
<PERIOD-TYPE>                                   6-MOS
<FISCAL-YEAR-END>                               NOV-30-1999
<PERIOD-END>                                    MAY-31-1999
<INVESTMENTS-AT-COST>                                          45,498,115
<INVESTMENTS-AT-VALUE>                                         54,779,273
<RECEIVABLES>                                                   2,798,002
<ASSETS-OTHER>                                                          0
<OTHER-ITEMS-ASSETS>                                                    0
<TOTAL-ASSETS>                                                 57,577,275
<PAYABLE-FOR-SECURITIES>                                        2,174,388
<SENIOR-LONG-TERM-DEBT>                                                 0
<OTHER-ITEMS-LIABILITIES>                                         873,612
<TOTAL-LIABILITIES>                                             3,048,000
<SENIOR-EQUITY>                                                   125,843
<PAID-IN-CAPITAL-COMMON>                                       50,714,384
<SHARES-COMMON-STOCK>                                               3,912
<SHARES-COMMON-PRIOR>                                               1,162
<ACCUMULATED-NII-CURRENT>                                         (96,475)
<OVERDISTRIBUTION-NII>                                                  0
<ACCUMULATED-NET-GAINS>                                        (5,480,612)
<OVERDISTRIBUTION-GAINS>                                                0
<ACCUM-APPREC-OR-DEPREC>                                        9,266,135
<NET-ASSETS>                                                   54,529,275
<DIVIDEND-INCOME>                                                 231,737
<INTEREST-INCOME>                                                  30,733
<OTHER-INCOME>                                                          0
<EXPENSES-NET>                                                    317,132
<NET-INVESTMENT-INCOME>                                           (54,662)
<REALIZED-GAINS-CURRENT>                                        1,669,726
<APPREC-INCREASE-CURRENT>                                       6,692,195
<NET-CHANGE-FROM-OPS>                                           8,307,259
<EQUALIZATION>                                                          0
<DISTRIBUTIONS-OF-INCOME>                                               0
<DISTRIBUTIONS-OF-GAINS>                                                0
<DISTRIBUTIONS-OTHER>                                                   0
<NUMBER-OF-SHARES-SOLD>                                            20,643
<NUMBER-OF-SHARES-REDEEMED>                                        16,731
<SHARES-REINVESTED>                                                     0
<NET-CHANGE-IN-ASSETS>                                         33,405,152
<ACCUMULATED-NII-PRIOR>                                            (6,575)
<ACCUMULATED-GAINS-PRIOR>                                      (7,246,420)
<OVERDISTRIB-NII-PRIOR>                                                 0
<OVERDIST-NET-GAINS-PRIOR>                                              0
<GROSS-ADVISORY-FEES>                                             317,006
<INTEREST-EXPENSE>                                                      0
<GROSS-EXPENSE>                                                   317,132
<AVERAGE-NET-ASSETS>                                               19,181
<PER-SHARE-NAV-BEGIN>                                                4.44
<PER-SHARE-NII>                                                      0.01
<PER-SHARE-GAIN-APPREC>                                              0.12
<PER-SHARE-DIVIDEND>                                                 0.00
<PER-SHARE-DISTRIBUTIONS>                                            0.00
<RETURNS-OF-CAPITAL>                                                 0.00
<PER-SHARE-NAV-END>                                                  4.33
<EXPENSE-RATIO>                                                      2.25
[AVG-DEBT-OUTSTANDING]                                                  0
[AVG-DEBT-PER-SHARE]                                                 0.00


</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.

<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> 32
   <NAME> EMERGING MARKETS INSTITUTIONAL CLASS

<S>                                           <C>
<PERIOD-TYPE>                                   6-MOS
<FISCAL-YEAR-END>                               NOV-30-1999
<PERIOD-END>                                    MAY-31-1999
<INVESTMENTS-AT-COST>                                          45,498,115
<INVESTMENTS-AT-VALUE>                                         54,779,273
<RECEIVABLES>                                                   2,798,002
<ASSETS-OTHER>                                                          0
<OTHER-ITEMS-ASSETS>                                                    0
<TOTAL-ASSETS>                                                 57,577,275
<PAYABLE-FOR-SECURITIES>                                        2,174,388
<SENIOR-LONG-TERM-DEBT>                                                 0
<OTHER-ITEMS-LIABILITIES>                                         873,612
<TOTAL-LIABILITIES>                                             3,048,000
<SENIOR-EQUITY>                                                   125,843
<PAID-IN-CAPITAL-COMMON>                                       50,714,384
<SHARES-COMMON-STOCK>                                           2,933,696
<SHARES-COMMON-PRIOR>                                                   0
<ACCUMULATED-NII-CURRENT>                                         (96,475)
<OVERDISTRIBUTION-NII>                                                  0
<ACCUMULATED-NET-GAINS>                                        (5,480,612)
<OVERDISTRIBUTION-GAINS>                                                0
<ACCUM-APPREC-OR-DEPREC>                                        9,266,135
<NET-ASSETS>                                                   54,529,275
<DIVIDEND-INCOME>                                                 231,737
<INTEREST-INCOME>                                                  30,733
<OTHER-INCOME>                                                          0
<EXPENSES-NET>                                                    317,132
<NET-INVESTMENT-INCOME>                                           (54,662)
<REALIZED-GAINS-CURRENT>                                        1,669,726
<APPREC-INCREASE-CURRENT>                                       6,692,195
<NET-CHANGE-FROM-OPS>                                           8,307,259
<EQUALIZATION>                                                          0
<DISTRIBUTIONS-OF-INCOME>                                               0
<DISTRIBUTIONS-OF-GAINS>                                                0
<DISTRIBUTIONS-OTHER>                                                   0
<NUMBER-OF-SHARES-SOLD>                                         2,933,696
<NUMBER-OF-SHARES-REDEEMED>                                             0
<SHARES-REINVESTED>                                                     0
<NET-CHANGE-IN-ASSETS>                                         33,405,152
<ACCUMULATED-NII-PRIOR>                                            (6,575)
<ACCUMULATED-GAINS-PRIOR>                                      (7,246,420)
<OVERDISTRIB-NII-PRIOR>                                                 0
<OVERDIST-NET-GAINS-PRIOR>                                              0
<GROSS-ADVISORY-FEES>                                             317,006
<INTEREST-EXPENSE>                                                      0
<GROSS-EXPENSE>                                                   317,132
<AVERAGE-NET-ASSETS>                                           10,720,725
<PER-SHARE-NAV-BEGIN>                                                3.39
<PER-SHARE-NII>                                                      0.01
<PER-SHARE-GAIN-APPREC>                                              0.93
<PER-SHARE-DIVIDEND>                                                 0.00
<PER-SHARE-DISTRIBUTIONS>                                            0.00
<RETURNS-OF-CAPITAL>                                                 0.00
<PER-SHARE-NAV-END>                                                  4.33
<EXPENSE-RATIO>                                                      1.80
[AVG-DEBT-OUTSTANDING]                                                  0
[AVG-DEBT-PER-SHARE]                                                 0.00


</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.

<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> 31
   <NAME> EMERGING MARKETS INVESTOR CLASS

<S>                                           <C>
<PERIOD-TYPE>                                   6-MOS
<FISCAL-YEAR-END>                               NOV-30-1999
<PERIOD-END>                                    MAY-31-1999
<INVESTMENTS-AT-COST>                                          45,498,115
<INVESTMENTS-AT-VALUE>                                         54,779,273
<RECEIVABLES>                                                   2,798,002
<ASSETS-OTHER>                                                          0
<OTHER-ITEMS-ASSETS>                                                    0
<TOTAL-ASSETS>                                                 57,577,275
<PAYABLE-FOR-SECURITIES>                                        2,174,388
<SENIOR-LONG-TERM-DEBT>                                                 0
<OTHER-ITEMS-LIABILITIES>                                         873,612
<TOTAL-LIABILITIES>                                             3,048,000
<SENIOR-EQUITY>                                                   125,843
<PAID-IN-CAPITAL-COMMON>                                       50,714,384
<SHARES-COMMON-STOCK>                                           9,646,643
<SHARES-COMMON-PRIOR>                                           6,049,600
<ACCUMULATED-NII-CURRENT>                                         (96,475)
<OVERDISTRIBUTION-NII>                                                  0
<ACCUMULATED-NET-GAINS>                                        (5,480,612)
<OVERDISTRIBUTION-GAINS>                                                0
<ACCUM-APPREC-OR-DEPREC>                                        9,266,135
<NET-ASSETS>                                                   54,529,275
<DIVIDEND-INCOME>                                                 231,737
<INTEREST-INCOME>                                                  30,733
<OTHER-INCOME>                                                          0
<EXPENSES-NET>                                                    317,132
<NET-INVESTMENT-INCOME>                                           (54,662)
<REALIZED-GAINS-CURRENT>                                        1,669,726
<APPREC-INCREASE-CURRENT>                                       6,692,195
<NET-CHANGE-FROM-OPS>                                           8,307,259
<EQUALIZATION>                                                          0
<DISTRIBUTIONS-OF-INCOME>                                               0
<DISTRIBUTIONS-OF-GAINS>                                                0
<DISTRIBUTIONS-OTHER>                                                   0
<NUMBER-OF-SHARES-SOLD>                                         8,643,964
<NUMBER-OF-SHARES-REDEEMED>                                     5,046,921
<SHARES-REINVESTED>                                                     0
<NET-CHANGE-IN-ASSETS>                                         33,405,152
<ACCUMULATED-NII-PRIOR>                                            (6,575)
<ACCUMULATED-GAINS-PRIOR>                                      (7,246,420)
<OVERDISTRIB-NII-PRIOR>                                                 0
<OVERDIST-NET-GAINS-PRIOR>                                              0
<GROSS-ADVISORY-FEES>                                             317,006
<INTEREST-EXPENSE>                                                      0
<GROSS-EXPENSE>                                                   317,132
<AVERAGE-NET-ASSETS>                                           27,539,624
<PER-SHARE-NAV-BEGIN>                                                3.49
<PER-SHARE-NII>                                                     (0.01)
<PER-SHARE-GAIN-APPREC>                                              0.85
<PER-SHARE-DIVIDEND>                                                 0.00
<PER-SHARE-DISTRIBUTIONS>                                            0.00
<RETURNS-OF-CAPITAL>                                                 0.00
<PER-SHARE-NAV-END>                                                  4.33
<EXPENSE-RATIO>                                                      2.00
[AVG-DEBT-OUTSTANDING]                                                  0
[AVG-DEBT-PER-SHARE]                                                 0.00


</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.

<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> 43
   <NAME> GLOBAL GROWTH FUND ADVISOR CLASS

<S>                                           <C>
<PERIOD-TYPE>                                   6-MOS
<FISCAL-YEAR-END>                               NOV-30-1999
<PERIOD-END>                                    MAY-31-1999
<INVESTMENTS-AT-COST>                                         107,926,808
<INVESTMENTS-AT-VALUE>                                        117,486,986
<RECEIVABLES>                                                   2,012,664
<ASSETS-OTHER>                                                  1,805,781
<OTHER-ITEMS-ASSETS>                                                    0
<TOTAL-ASSETS>                                                121,305,431
<PAYABLE-FOR-SECURITIES>                                        3,192,575
<SENIOR-LONG-TERM-DEBT>                                                 0
<OTHER-ITEMS-LIABILITIES>                                         129,257
<TOTAL-LIABILITIES>                                             3,321,832
<SENIOR-EQUITY>                                                   198,834
<PAID-IN-CAPITAL-COMMON>                                      104,592,656
<SHARES-COMMON-STOCK>                                              10,720
<SHARES-COMMON-PRIOR>                                                   0
<ACCUMULATED-NII-CURRENT>                                          92,182
<OVERDISTRIBUTION-NII>                                                  0
<ACCUMULATED-NET-GAINS>                                         3,506,457
<OVERDISTRIBUTION-GAINS>                                                0
<ACCUM-APPREC-OR-DEPREC>                                        9,593,470
<NET-ASSETS>                                                  117,983,599
<DIVIDEND-INCOME>                                                 545,867
<INTEREST-INCOME>                                                 148,457
<OTHER-INCOME>                                                          0
<EXPENSES-NET>                                                    602,142
<NET-INVESTMENT-INCOME>                                            92,182
<REALIZED-GAINS-CURRENT>                                        3,506,457
<APPREC-INCREASE-CURRENT>                                       9,593,470
<NET-CHANGE-FROM-OPS>                                          13,192,109
<EQUALIZATION>                                                          0
<DISTRIBUTIONS-OF-INCOME>                                               0
<DISTRIBUTIONS-OF-GAINS>                                                0
<DISTRIBUTIONS-OTHER>                                                   0
<NUMBER-OF-SHARES-SOLD>                                            11,940
<NUMBER-OF-SHARES-REDEEMED>                                         1,220
<SHARES-REINVESTED>                                                     0
<NET-CHANGE-IN-ASSETS>                                        117,983,599
<ACCUMULATED-NII-PRIOR>                                                 0
<ACCUMULATED-GAINS-PRIOR>                                               0
<OVERDISTRIB-NII-PRIOR>                                                 0
<OVERDIST-NET-GAINS-PRIOR>                                              0
<GROSS-ADVISORY-FEES>                                             601,756
<INTEREST-EXPENSE>                                                      0
<GROSS-EXPENSE>                                                   602,142
<AVERAGE-NET-ASSETS>                                               23,182
<PER-SHARE-NAV-BEGIN>                                                5.58
<PER-SHARE-NII>                                                      0.01
<PER-SHARE-GAIN-APPREC>                                              0.34
<PER-SHARE-DIVIDEND>                                                 0.00
<PER-SHARE-DISTRIBUTIONS>                                            0.00
<RETURNS-OF-CAPITAL>                                                 0.00
<PER-SHARE-NAV-END>                                                  5.93
<EXPENSE-RATIO>                                                      1.55
[AVG-DEBT-OUTSTANDING]                                                  0
[AVG-DEBT-PER-SHARE]                                                 0.00


</TABLE>
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.

<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> 41
   <NAME> GLOBAL GROWTH FUND INVESTORS CLASS

<S>                                           <C>
<PERIOD-TYPE>                                   6-MOS
<FISCAL-YEAR-END>                               NOV-30-1999
<PERIOD-END>                                    MAY-31-1999
<INVESTMENTS-AT-COST>                                         107,926,808
<INVESTMENTS-AT-VALUE>                                        117,486,986
<RECEIVABLES>                                                   2,012,664
<ASSETS-OTHER>                                                  1,805,781
<OTHER-ITEMS-ASSETS>                                                    0
<TOTAL-ASSETS>                                                121,305,431
<PAYABLE-FOR-SECURITIES>                                        3,192,575
<SENIOR-LONG-TERM-DEBT>                                                 0
<OTHER-ITEMS-LIABILITIES>                                         129,257
<TOTAL-LIABILITIES>                                             3,321,832
<SENIOR-EQUITY>                                                   198,834
<PAID-IN-CAPITAL-COMMON>                                      104,592,656
<SHARES-COMMON-STOCK>                                          19,872,704
<SHARES-COMMON-PRIOR>                                                   0
<ACCUMULATED-NII-CURRENT>                                          92,182
<OVERDISTRIBUTION-NII>                                                  0
<ACCUMULATED-NET-GAINS>                                         3,506,457
<OVERDISTRIBUTION-GAINS>                                                0
<ACCUM-APPREC-OR-DEPREC>                                        9,593,470
<NET-ASSETS>                                                  117,983,599
<DIVIDEND-INCOME>                                                 545,867
<INTEREST-INCOME>                                                 148,457
<OTHER-INCOME>                                                          0
<EXPENSES-NET>                                                    602,142
<NET-INVESTMENT-INCOME>                                            92,182
<REALIZED-GAINS-CURRENT>                                        3,506,457
<APPREC-INCREASE-CURRENT>                                       9,593,470
<NET-CHANGE-FROM-OPS>                                          13,192,109
<EQUALIZATION>                                                          0
<DISTRIBUTIONS-OF-INCOME>                                               0
<DISTRIBUTIONS-OF-GAINS>                                                0
<DISTRIBUTIONS-OTHER>                                                   0
<NUMBER-OF-SHARES-SOLD>                                        24,281,849
<NUMBER-OF-SHARES-REDEEMED>                                     4,409,145
<SHARES-REINVESTED>                                                     0
<NET-CHANGE-IN-ASSETS>                                        117,983,599
<ACCUMULATED-NII-PRIOR>                                                 0
<ACCUMULATED-GAINS-PRIOR>                                               0
<OVERDISTRIB-NII-PRIOR>                                                 0
<OVERDIST-NET-GAINS-PRIOR>                                              0
<GROSS-ADVISORY-FEES>                                             601,756
<INTEREST-EXPENSE>                                                      0
<GROSS-EXPENSE>                                                   602,142
<AVERAGE-NET-ASSETS>                                           92,798,978
<PER-SHARE-NAV-BEGIN>                                                5.00
<PER-SHARE-NII>                                                      0.01
<PER-SHARE-GAIN-APPREC>                                              0.92
<PER-SHARE-DIVIDEND>                                                 0.00
<PER-SHARE-DISTRIBUTIONS>                                            0.00
<RETURNS-OF-CAPITAL>                                                 0.00
<PER-SHARE-NAV-END>                                                  5.93
<EXPENSE-RATIO>                                                      1.30
[AVG-DEBT-OUTSTANDING]                                                  0
[AVG-DEBT-PER-SHARE]                                                 0.00


</TABLE>

<TABLE>
10F-3 TRANSACTIONS FOR PERIOD 6/1/98 THRU 11/30/99
Fund           Issuer         TickerPrincipal AAmount(PurchTrade(DaPrice  UnderwriteUnderwritinCurrency Underwriting Spread (US$)
<S>            <C>            <C>  <C>         <C>         <C>     <C>    <C>       <C>        <C>      <C>
Global Growth  Infinity BroadcINFin$3,181,887,0$307,500.00 12/09/98$20.5000 MERR        4.000%   USD        $0.820
Global Growth  Estee Lauder   EL   $364,572,425$371,000.00 05/19/99$92.7500 GSCO        3.256%   USD        $3.020
Global Growth  Starmedia      STRM $120,750,000$600,000.00 05/25/99$15.0000 GSCO        7.000%   USD        $1.050
Emerging MarketStarmedia      STRM $120,750,000$750,000.00 05/25/99$15.0000 GSCO        7.000%   USD        $1.050
</TABLE>

                                      AMERICAN CENTURY WORLD MUTUAL FUNDS, INC.

                                               ARTICLES SUPPLEMENTARY

     AMERICAN  CENTURY WORLD MUTUAL FUNDS,  INC., a Maryland  corporation  whose
principal Maryland office is located in Baltimore, Maryland (the "Corporation"),
hereby certifies to the State Department of Assessments and Taxation of Maryland
that:

     FIRST:  The  Corporation  is  registered  as an open-end  company under the
Investment Company Act of 1940.

     SECOND: Pursuant to authority expressly vested in the Board of Directors of
the Corporation by Section  2-605(a)(4) of the Maryland General Corporation Law,
the Board of Directors of the Corporation  has renamed the duly  established and
allocated series of the Corporation's stock as follows:

     Prior  Series Name New Series  Name  American  Century - Twentieth  Century
International  International Growth Fund Growth Fund American Century -Twentieth
Century  Global  Growth Fund Global  Growth  Fund  American  Century - Twentieth
Century  International  International  Discovery  Fund  Discovery  Fund American
Century - Twentieth Century Emerging Markets Fund Emerging Markets Fund

The name changes shall be effective on March 1, 1999.

     THIRD:  Except as  otherwise  provided by the express  provisions  of these
Articles  Supplementary,  nothing herein shall limit, by inference or otherwise,
the  discretionary  right of the Board of  Directors to  serialize,  classify or
reclassify and issue any unissued  shares of any Series or Class or any unissued
shares that have not been  allocated  to a Series or Class,  and to fix or alter
all terms thereof,  to the full extent provided by the Articles of Incorporation
of the Corporation.

     FOURTH:  A description  of the series and classes of shares,  including the
preferences,   conversion  and  other  rights,   voting  powers,   restrictions,
limitations  as to  dividends,  qualifications,  and  terms and  conditions  for
redemption is set forth in the Articles of  Incorporation of the Corporation and
is not  changed by these  Articles  Supplementary,  except  with  respect to the
creation and/or designation of the various Series.

     FIFTH: The Board of Directors of the Corporation  duly adopted  resolutions
renaming the Series, as set forth in Article SECOND.

     IN WITNESS WHEREOF,  AMERICAN  CENTURY WORLD MUTUAL FUNDS,  INC. has caused
these Articles  Supplementary  to be signed and  acknowledged in its name and on
its behalf by its Vice President and its corporate  seal to be hereunto  affixed
and attested to by its Assistant Secretary on this 16th day of February, 1999.

     AMERICAN CENTURY WORLD ATTEST: MUTUAL FUNDS, INC.


     By:  Name:  David H.  Reinmiller  Name:  David C. Tucker  Title:  Assistant
Secretary Title: Vice President


     THE UNDERSIGNED  Executive Vice President of AMERICAN  CENTURY WORLD MUTUAL
FUNDS,  INC., who executed on behalf of said Corporation the foregoing  Articles
Supplementary to the Charter,  of which this certificate is made a part,  hereby
acknowledges,  in the name of and on behalf of said  Corporation,  the foregoing
Articles  Supplementary  to  the  Charter  to  be  the  corporate  act  of  said
Corporation,  and  further  certifies  that,  to  the  best  of  his  knowledge,
information and belief,  the matters and facts set forth therein with respect to
the approval  thereof are true in all material  respects  under the penalties of
perjury.



     Dated: February 16, 1999 David C. Tucker, Vice President


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