<ARTICLE>                      5
<CIK>                          0000879815
<NAME>                         GEODYNE ENERGY INCOME LTD PARTNERSHIP III-G

                            
<PERIOD-TYPE>                  3-MOS
<FISCAL-YEAR-END>              DEC-31-2000
<PERIOD-START>                 JAN-01-2000
<PERIOD-END>                   MAR-31-2000
<CASH>                            255,737
<SECURITIES>                            0
<RECEIVABLES>                     300,513
<ALLOWANCES>                            0
<INVENTORY>                             0
<CURRENT-ASSETS>                  556,250
<PP&E>                          9,381,335
<DEPRECIATION>                  8,166,070
<TOTAL-ASSETS>                  1,807,992
<CURRENT-LIABILITIES>              48,803
<BONDS>                                 0
<PREFERRED-MANDATORY>                   0
<PREFERRED>                             0
<COMMON>                                0
<OTHER-SE>                      1,679,120
<TOTAL-LIABILITY-AND-EQUITY>    1,807,992
<SALES>                           485,737
<TOTAL-REVENUES>                  489,944
<CGS>                                   0
<TOTAL-COSTS>                     253,612
<OTHER-EXPENSES>                        0
<LOSS-PROVISION>                        0
<INTEREST-EXPENSE>                      0
<INCOME-PRETAX>                   236,332
<INCOME-TAX>                            0
<INCOME-CONTINUING>               236,332
<DISCONTINUED>                          0
<EXTRAORDINARY>                         0
<CHANGES>                               0
<NET-INCOME>                      236,332
<EPS-BASIC>                          1.83
<EPS-DILUTED>                           0