Oil & Gas Companies in Cass County, TX
| Company Name | Company Location | Company Type | Most Recent Production |
| 1 | Aber Oil & Gas Co. | Tyler, TX 75702 | Oil & Gas Operator | Nov 2013 |
| 2 | Aethon Energy Operating LLC | Dallas, TX 75251 | Oil & Gas Operator | Oct 2025 |
| 3 | Alaron Energy, Inc. | Irving, TX 75038 | Oil & Gas Operator | Oct 2025 |
| 4 | Alt Production, LLC | Kilgore, TX 75663 | Oil Operator | Oct 2025 |
| 5 | Amoco Production Co. | Houston, TX 77253 | Oil & Gas Operator | Jun 2015 |
| 6 | Amplify Energy Operating LLC | Houston, TX 77002 | Oil & Gas Operator | Oct 2025 |
| 7 | Anadarko E&P Onshore LLC | Houston, TX 77046 | Oil & Gas Operator | Oct 2025 |
| 8 | Apache Corporation | Houston, TX 77042 | Oil & Gas Operator | Oct 2025 |
| 9 | Aratex Production Company | Denver, CO 80202 | Oil & Gas Operator | Jun 2003 |
| 10 | Ark-La-Tex Production, LLC | Doddridge, AR 71834 | Oil Operator | Jan 2025 |
| 11 | Arkla Exploration Co. | Shreveport, LA 71151 | Oil & Gas Operator | Jan 1993 |
| 12 | Asher Resources | Boerne, TX 78006 | Oil & Gas Operator | May 2015 |
| 13 | Atasca Resources Inc | Houston, TX 77219 | Oil & Gas Operator | Oct 2025 |
Production numbers shown above are only for Cass County, TX and for the production period listed.