<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> 21
<NAME> TARGET 2000 - INVESTOR CLASS
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> SEP-30-1999
<PERIOD-END> MAR-31-2000
<INVESTMENTS-AT-COST> 184,399,468
<INVESTMENTS-AT-VALUE> 184,232,935
<RECEIVABLES> 116,896
<ASSETS-OTHER> 285,183
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 184,635,014
<PAYABLE-FOR-SECURITIES> 0
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 93,314
<TOTAL-LIABILITIES> 93,314
<SENIOR-EQUITY> 18,657
<PAID-IN-CAPITAL-COMMON> 182,265,541
<SHARES-COMMON-STOCK> 1,865,675
<SHARES-COMMON-PRIOR> 2,101,412
<ACCUMULATED-NII-CURRENT> 2,557,291
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> (133,256)
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> (166,533)
<NET-ASSETS> 184,541,700
<DIVIDEND-INCOME> 0
<INTEREST-INCOME> 5,864,670
<OTHER-INCOME> 12,312
<EXPENSES-NET> 574,133
<NET-INVESTMENT-INCOME> 5,302,849
<REALIZED-GAINS-CURRENT> (132,263)
<APPREC-INCREASE-CURRENT> (1,117,989)
<NET-CHANGE-FROM-OPS> 4,052,597
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 11,158,242
<DISTRIBUTIONS-OF-GAINS> 509,907
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 568,039
<NUMBER-OF-SHARES-REDEEMED> (92,852)
<SHARES-REINVESTED> 124,776
<NET-CHANGE-IN-ASSETS> (18,360,980)
<ACCUMULATED-NII-PRIOR> 10,075,324
<ACCUMULATED-GAINS-PRIOR> 179,752
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 567,360
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 574,133
<AVERAGE-NET-ASSETS> 193,108,556
<PER-SHARE-NAV-BEGIN> 96.11
<PER-SHARE-NII> 2.65
<PER-SHARE-GAIN-APPREC> (0.60)
<PER-SHARE-DIVIDEND> 5.52
<PER-SHARE-DISTRIBUTIONS> 0.25
<RETURNS-OF-CAPITAL> 0.00
<PER-SHARE-NAV-END> 98.16
<EXPENSE-RATIO> 0.59
</TABLE>
