Oil & Gas Companies in Knox County, TX
| Company Name | Company Location | Company Type | Most Recent Production |
| 1 | J & J Trading | Abilene, TX 79608 | Oil & Gas Operator | Dec 2004 |
| 2 | J&R Operating | Holliday, TX 76366 | Oil & Gas Operator | Feb 2024 |
| 3 | J-E Production, Inc. | Midland, TX 79708 | Oil & Gas Operator | Mar 2008 |
| 4 | J-O'B Operating Company | Shreveport, LA 71135 | Oil & Gas Operator | Oct 2025 |
| 5 | Jil Oil Corp. | San Antonio, TX 78279 | Oil & Gas Operator | Oct 2025 |
| 6 | Jin Petroleum LLC | New Braunfels, TX 78130 | Oil Operator | Oct 2025 |
| 7 | Jla Resources Company | Austin, TX 78746 | Oil & Gas Operator | Oct 2025 |
| 8 | Johnson & Ernst Operating Co. | Wichita Falls, TX 76307 | Oil & Gas Operator | Sep 2018 |
| 9 | Johnson, William D. | Fort Worth, TX 76116 | Oil & Gas Operator | Mar 2008 |
| 10 | Journey Operating, L.L.C. | Sugar Land, TX 77496 | Oil & Gas Operator | Aug 2006 |
Production numbers shown above are only for Knox County, TX and for the production period listed.