Oil & Gas Companies in Hardin County, TX
| Company Name | Company Location | Company Type | Most Recent Production |
| 1 | Oil Well Buyers Corp. | Houston, TX 77056 | Oil & Gas Operator | Dec 2024 |
| 2 | Old Timers Oil | Saratoga, TX 77585 | Oil & Gas Operator | Nov 2014 |
| 3 | Old Timers Oil Company, LLC | Saratoga, TX 77585 | Oil Operator | Aug 2022 |
| 4 | Old Timers Oil No. 2 Incorporated | Saratoga, TX 77585 | Oil Operator | Oct 2025 |
| 5 | Olipdp II, LLC | Lafayette, LA 70503 | Oil & Gas Operator | Oct 2025 |
| 6 | Omega Energy Corp. | Graham, TX 76450 | Oil & Gas Operator | Oct 2025 |
| 7 | Omega Energy, LLC | Corpus Chrsti, TX 78418 | Oil & Gas Operator | Oct 2025 |
| 8 | Omimex Petroleum Inc | Fort Worth, TX 76120 | Oil & Gas Operator | Aug 2022 |
| 9 | Orisol Oil Co. | Houston, TX 77206 | Oil Operator | Jun 2000 |
| 10 | Otex Resources LLC | Baytown, TX 77520 | Oil & Gas Operator | Oct 2025 |
Production numbers shown above are only for Hardin County, TX and for the production period listed.