Oil & Gas Companies in Seward County, KS
| Company Name | Company Location | Company Type | Most Recent Production |
| 1 | Nadel & Gussman | Tulsa, OK 74103 | Oil & Gas Operator | May 2007 |
| 2 | Nadel And Gussman LLC | Tulsa, OK 74119 | Oil & Gas Operator | Dec 2025 |
| 3 | Nash Oil & Gas, Inc. | Newton, KS 67114 | Oil & Gas Operator | Jun 2025 |
| 4 | Newfield Exploration Mid-Continent, Inc | Tulsa, OK 74119 | Oil & Gas Operator | Apr 2011 |
| 5 | Nichols Fluid Service, Inc. | Liberal, KS 67901 | Oil Operator | Jun 2019 |
| 6 | Noble Energy Inc | Midland, TX 79706 | Oil & Gas Operator | Dec 2025 |
| 7 | Northern Pump Company | Denver, CO 80202-3130 | Oil & Gas Operator | Feb 2006 |
Production numbers shown above are only for Seward County, KS and for the production period listed.