Oil & Gas Companies in Pontotoc County, OK
| Company Name | Company Location | Company Type | Most Recent Production |
| 1 | Eagle Minerals & Oil Prop Inc | Tulsa, OK 74119 | Oil & Gas Operator | Jan 2002 |
| 2 | Eagle Rock Mid-Continent Operating LLC | Tulsa, OK 74103-3703 | Oil & Gas Operator | Sep 2025 |
| 3 | East Fitts Project LTD PTNSHP | Ada, OK 74820 | Oil & Gas Operator | Dec 2002 |
| 4 | Echo Production Inc | Graham, TX 76450 | Oil & Gas Operator | Dec 2025 |
| 5 | Ekg Operating Inc | Seminole, OK 74818-1028 | Oil & Gas Operator | Nov 2015 |
| 6 | Eland Energy Inc | Dallas, TX 75248 | Oil & Gas Operator | Oct 2025 |
| 7 | Elite Tank Trucks, Inc | | Oil & Gas Operator | Oct 2025 |
| 8 | Elliott Resources Inc | Ada, OK 74820-9227 | Oil & Gas Operator | Jul 2010 |
| 9 | Encore Operating LP | Plano, TX 75024 | Oil & Gas Operator | Oct 2025 |
| 10 | Enerfin Resources I Limited Partnership | Houston, TX 77077-2386 | Oil & Gas Operator | Apr 2023 |
| 11 | Energy Lease Service Inc | Drumright, OK 74030-7403 | Oil & Gas Operator | Oct 2025 |
| 12 | Energy Production Services LLC | Oklahoma City, OK 73162-4736 | Oil & Gas Operator | Apr 2020 |
| 13 | Energyquest II, LLC | The Woodlands, TX 77381 | Oil & Gas Operator | Oct 2025 |
| 14 | Ennis Bill H | Sasakwa, OK 74867-0001 | Oil & Gas Operator | Sep 2014 |
| 15 | Entex Petroleum Inc | Oklahoma City, OK 73113 | Oil & Gas Operator | Nov 1997 |
| 16 | Eott Energy Corporation | Oklahoma City, OK 73118 | Oil & Gas Operator | Dec 1995 |
| 17 | Esis Inc | | Oil & Gas Operator | Feb 2017 |
| 18 | Export Petroleum Corporation | Fort Worth, TX 76147 | Oil & Gas Operator | Dec 2025 |
| 19 | Exxon Mobil Corporation | Spring, TX 77389 | Oil & Gas Operator | Dec 2025 |
| 20 | Exxonmobil Oil Corp | Houston, TX 77210 | Oil & Gas Operator | Aug 2025 |
Production numbers shown above are only for Pontotoc County, OK and for the production period listed.