Oil & Gas Companies in Cass County, TX
| Company Name | Company Location | Company Type | Most Recent Production |
| 1 | Camterra Resources, Inc. | Marshall, TX 75671 | Oil & Gas Operator | Oct 2025 |
| 2 | Caruthers Producing Co., Inc. | Kilgore, TX 75663 | Oil & Gas Operator | Feb 2019 |
| 3 | Cass Energy LLC | MT Vernon, TX 75457 | Oil Operator | Oct 2025 |
| 4 | Cavalry Resources LLC | The Woodlands, TX 77380 | Oil & Gas Operator | Jun 2010 |
| 5 | Ceja Corporation | Tulsa, OK 74172 | Oil & Gas Operator | Jul 2025 |
| 6 | Chaparral (USA) Energy, Inc. | Oklahoma City, OK 73114 | Oil & Gas Operator | Sep 2002 |
| 7 | Chaparral Energy, L.L.C. | Oklahoma City, OK 73142 | Oil & Gas Operator | Oct 2025 |
| 8 | Chaparral Operating, Inc. | Shreveport, LA 71166 | Oil & Gas Operator | Oct 2025 |
| 9 | Citation Oil & Gas Corp. | Houston, TX 77269 | Oil & Gas Operator | Oct 2025 |
| 10 | Classic Oil & Gas, Inc. | Tyler, TX 75701 | Oil & Gas Operator | Jan 2004 |
| 11 | Cole, Frank W Engineering | Dallas, TX 75254 | Oil & Gas Operator | Mar 2006 |
| 12 | Comanche Well Service Corp. | Plano, TX 75093 | Oil & Gas Operator | Oct 2025 |
| 13 | Continental Operating Co. | Houston, TX 77024 | Oil & Gas Operator | Oct 2025 |
| 14 | Costilla Energy Inc | Midland, TX 79702 | Oil & Gas Operator | Mar 2008 |
| 15 | Craig, Carl | Olney, TX 76374 | Oil & Gas Operator | Oct 2025 |
| 16 | Crow, David | Shreveport, LA 71106 | Oil & Gas Operator | May 2001 |
| 17 | Crystal Oil Company | Shreveport, LA 71120 | Oil & Gas Operator | Jul 1995 |
Production numbers shown above are only for Cass County, TX and for the production period listed.