<ARTICLE> 5 <CIK> 0000863837 <NAME> GEODYNE ENERGY INCOME LTD PARTNERSHIP III-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 <PREFERRED-MANDATORY> 0 <PREFERRED> 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