<TABLE> <S> <C>
<ARTICLE> 5
<CIK> 0000863837
<NAME> GEODYNE ENERGY INCOME LTD PARTNERSHIP III-C
<S> <C>
<PERIOD-TYPE> 9-MOS
<FISCAL-YEAR-END> DEC-31-2000
<PERIOD-START> JAN-01-2000
<PERIOD-END> SEP-30-2000
<CASH> 763,444
<SECURITIES> 0
<RECEIVABLES> 695,044
<ALLOWANCES> 0
<INVENTORY> 0
<CURRENT-ASSETS> 1,458,488
<PP&E> 20,549,376
<DEPRECIATION> 18,511,342
<TOTAL-ASSETS> 3,693,791
<CURRENT-LIABILITIES> 87,295
<BONDS> 0
0
0
<COMMON> 0
<OTHER-SE> 3,450,100
<TOTAL-LIABILITY-AND-EQUITY> 3,693,791
<SALES> 2,714,891
<TOTAL-REVENUES> 2,796,926
<CGS> 0
<TOTAL-COSTS> 1,114,894
<OTHER-EXPENSES> 0
<LOSS-PROVISION> 0
<INTEREST-EXPENSE> 0
<INCOME-PRETAX> 1,682,032
<INCOME-TAX> 0
<INCOME-CONTINUING> 1,682,032
<DISCONTINUED> 0
<EXTRAORDINARY> 0
<CHANGES> 0
<NET-INCOME> 1,682,032
<EPS-BASIC> 6.50
<EPS-DILUTED> 0
</TABLE>