| 1 | C & L Oil And Gas Corporation | Norman, OK 73069-8224 | Oil & Gas Operator | Feb 2024 |
| 2 | C & M Exploration LLC | Tulsa, OK 74159-1331 | Oil & Gas Operator | Jun 2014 |
| 3 | C Rose Oil Co. | Midland, TX 79708 | Oil & Gas Operator | Jan 2024 |
| 4 | Call Harold Charles | Copan, OK 74022-0306 | Oil Operator | Jan 2024 |
| 5 | Call, Harold L | | Oil Operator | Mar 2015 |
| 6 | Canadian Exploration Corp | | Oil & Gas Operator | Oct 1994 |
| 7 | Cannuck Resources Inc | Nowata, OK 74048 | Oil & Gas Operator | Aug 2000 |
| 8 | Canvas Energy LLC | Oklahoma City, OK 73142-1839 | Oil & Gas Operator | Mar 2024 |
| 9 | Capstone Oilfield Disposal Service LLC | Hennessey, OK 73742-0698 | Oil Operator | Dec 2019 |
| 10 | Carman Frances J | Pawhuska, OK 74056-0101 | Oil & Gas Operator | Aug 2013 |
| 11 | Carter Donald L | Sand Springs, OK 74063-8105 | Oil Operator | May 2006 |
| 12 | CBM Gas Company LLC | Dewey, OK 74029 | Oil & Gas Operator | Aug 2020 |
| 13 | Central Ok Reclamation LLC | | Oil & Gas Operator | Jun 2014 |
| 14 | Centrex Operating Company | Tulsa, OK 74105 | Oil & Gas Operator | Jan 2024 |
| 15 | Century Petroleum | Nowata, OK 74048 | Oil & Gas Operator | Dec 2000 |
| 16 | Cep Mid-Continent LLC | Skiatook, OK 74070 | Oil & Gas Operator | Jan 2024 |
| 17 | Cimarron Production Co Inc | Oklahoma City, OK 73142-3017 | Oil & Gas Operator | Jan 2024 |
| 18 | Citation Oil & Gas Corp. | Houston, TX 77269 | Oil & Gas Operator | May 2024 |
| 19 | Clift Cary E | Chickasha, OK 73018-6305 | Oil & Gas Operator | Feb 2023 |
| 20 | Clindco Inc | Bartlesville, OK 74006-6213 | Oil & Gas Operator | Oct 2019 |
| 21 | CLM Oil Production Inc | Bartlesville, OK 74006-4417 | Oil & Gas Operator | Jan 2024 |
| 22 | CM Oil Co. | FT Stockton, TX 79735 | Oil & Gas Operator | May 2024 |
| 23 | Coe Production Company | Talala, OK 74080-0264 | Oil & Gas Operator | Aug 2015 |
| 24 | Coe Production Company LLC | Talala, OK 74080 | Oil Operator | Sep 2023 |
| 25 | Coldren Oil & Gas Inc | Bartlesville, OK 74006-4729 | Oil & Gas Operator | Sep 1998 |
| 26 | Comdisco Resources Inc | | Oil Operator | Aug 2004 |
| 27 | Concorde Resource Corporation | Eufaula, OK 74432-0841 | Oil & Gas Operator | Feb 2024 |
| 28 | Consolidated Oil & Gas Inc | Wichita, KS 67202 | Oil & Gas Operator | Dec 2012 |
| 29 | Continental Energy | Garden City, KS 67846-0918 | Oil & Gas Operator | Jul 2017 |
| 30 | Continental Resources, Inc. | Oklahoma City, OK 73126 | Oil & Gas Operator | May 2024 |
| 31 | Convest Energy Corporation | Houston, TX 77057 | Oil & Gas Operator | Sep 2014 |
| 32 | Corbell Wayne L | Fort Worth, TX 76111-4615 | Oil & Gas Operator | Apr 2023 |
| 33 | County Line Stripper Wells LLC | | Oil & Gas Operator | Sep 2023 |
| 34 | Cramer Oil LLC | | Oil Operator | Jan 2024 |
| 35 | Cricket Enterprises Corporation | Nowata, OK 74048-9683 | Oil & Gas Operator | Mar 2015 |
| 36 | Crude Marketing & Trans Inc | Tulsa, OK 74159 | Oil & Gas Operator | Sep 2017 |
| 37 | CW Investments | Okmulgee, OK 74447-4026 | Oil & Gas Operator | Jan 2024 |