Oil & Gas Companies in Hardin County, TX
| Company Name | Company Location | Company Type | Most Recent Production |
| 1 | Natural Reserves Group, Inc. | Houston, TX 77057 | Oil & Gas Operator | Jun 1993 |
| 2 | Neches Transport Inc. | Spurger, TX 77660 | Oil & Gas Operator | Oct 2025 |
| 3 | Newton Corp.,The | Dallas, TX 75251 | Oil & Gas Operator | Oct 2025 |
| 4 | Newton, W. F. | Conroe, TX 77305 | Oil & Gas Operator | Jun 1994 |
| 5 | Newton, W. F. Estate Of | Conroe, TX 77305 | Oil & Gas Operator | Jan 2000 |
| 6 | Norcen Explorer, Inc. | Houston, TX 77079 | Oil & Gas Operator | May 1998 |
| 7 | North Central Oil Corp | Houston, TX 77252 | Oil & Gas Operator | Dec 2005 |
| 8 | North Lake Resources LLC | Oklahoma City, OK 73132 | Oil & Gas Operator | Oct 2025 |
| 9 | Nueces Petroleum Corporation | Sugar Land, TX 77496 | Oil Operator | Oct 2025 |
Production numbers shown above are only for Hardin County, TX and for the production period listed.