Oil & Gas Companies in Graham County, KS
| Company Name | Company Location | Company Type | Most Recent Production |
| 1 | G L M Company | | Oil Operator | Jun 2025 |
| 2 | Galloway Drillin | | Oil Operator | Dec 1996 |
| 3 | Galloway Drilling Co., Inc. | Wichita, KS 67202 | Oil Operator | Nov 2009 |
| 4 | Gateway Resources, LLC | Wichita, KS 67218 | Oil Operator | Jun 2025 |
| 5 | Gerstner, Joe | Ness City, KS 67560 | Oil Operator | Mar 2016 |
| 6 | Gore Oil Company | Wichita, KS 67202 | Oil & Gas Operator | Jun 2025 |
| 7 | Grady Bolding Corporation | Ellinwood, KS 67526 | Oil & Gas Operator | Jun 2025 |
| 8 | Graham-Michaelis | | Oil & Gas Operator | Nov 1996 |
| 9 | Grand Mesa Operating Company | Wichita, KS 67206 | Oil & Gas Operator | Sep 2025 |
| 10 | Great Eastern Energy & Dev. Corp. | Midland, TX 79701 | Oil & Gas Operator | Jul 2008 |
| 11 | Great Plains Energy, Inc. | Lincoln, NE 68516 | Oil & Gas Operator | Sep 2025 |
| 12 | Great Plains Petroleum, Inc. | Snyder, TX 79549 | Oil & Gas Operator | Jun 2025 |
| 13 | Griggs Oil Incor | | Oil & Gas Operator | May 1994 |
Production numbers shown above are only for Graham County, KS and for the production period listed.