Oil & Gas Companies in Anderson County, TX
| Company Name | Company Location | Company Type | Most Recent Production |
| 1 | O'Benco, Inc. | Shreveport, LA 71136 | Oil & Gas Operator | Dec 2025 |
| 2 | O'Ryan Oil And Gas | Odessa, TX 79768 | Oil & Gas Operator | Dec 2025 |
| 3 | Oakwood Energy, Inc. | Jourdanton, TX 78026 | Oil & Gas Operator | Mar 2023 |
| 4 | Ocean Energy Inc | Houston, TX 77002 | Oil & Gas Operator | Aug 2003 |
| 5 | Omega Energy Corp. | Graham, TX 76450 | Oil & Gas Operator | Dec 2025 |
| 6 | Omega Energy, LLC | Corpus Chrsti, TX 78418 | Oil & Gas Operator | Dec 2025 |
| 7 | Omni Oil & Gas, Inc. | San Antonio, TX 78229 | Oil & Gas Operator | Oct 2017 |
| 8 | One Tec Operating, LLC | Houston, TX 77002 | Oil & Gas Operator | Nov 2007 |
| 9 | Orangefield East Corp | Dallas, TX 75382 | Oil Operator | Dec 2025 |
| 10 | Ouida Oil | Rowlett, TX 75030 | Oil & Gas Operator | Mar 2008 |
Production numbers shown above are only for Anderson County, TX and for the production period listed.