<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION
EXTRACTED FROM THE SEMI-ANNUAL REPORT OF AMERICAN CENTURY TARGET
MATURITIES TRUST AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE
TO SUCH REPORT.
</LEGEND>
<CIK> 0000757928
<NAME> AMERICAN CENTURY TARGET MATURITIES TRUST
<SERIES>
<NUMBER> 43
<NAME> TARGET 2010 - ADVISOR CLASS
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> SEP-30-1999
<PERIOD-END> MAR-31-2000
<INVESTMENTS-AT-COST> 217,239,471
<INVESTMENTS-AT-VALUE> 216,710,541
<RECEIVABLES> 0
<ASSETS-OTHER> 1,001,172
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 217,711,713
<PAYABLE-FOR-SECURITIES> 0
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 424,933
<TOTAL-LIABILITIES> 424,933
<SENIOR-EQUITY> 224
<PAID-IN-CAPITAL-COMMON> 217,621,874
<SHARES-COMMON-STOCK> 22,444
<SHARES-COMMON-PRIOR> 21,730
<ACCUMULATED-NII-CURRENT> 3,207,059
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> (3,013,447)
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> (528,930)
<NET-ASSETS> 217,286,780
<DIVIDEND-INCOME> 0
<INTEREST-INCOME> 7,335,165
<OTHER-INCOME> 0
<EXPENSES-NET> 659,079
<NET-INVESTMENT-INCOME> 6,676,086
<REALIZED-GAINS-CURRENT> (2,370,219)
<APPREC-INCREASE-CURRENT> 1,482,169
<NET-CHANGE-FROM-OPS> 5,788,036
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 73,905
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 5,091
<NUMBER-OF-SHARES-REDEEMED> (5,484)
<SHARES-REINVESTED> 1,107
<NET-CHANGE-IN-ASSETS> (24,513,536)
<ACCUMULATED-NII-PRIOR> 3,129,184
<ACCUMULATED-GAINS-PRIOR> 1,495,282
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 651,769
<INTEREST-EXPENSE> 0
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<AVERAGE-NET-ASSETS> 1,278,873
<PER-SHARE-NAV-BEGIN> 54.96
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<EXPENSE-RATIO> 0.84
</TABLE>