Oil & Gas Companies in Kansas
| Company Name | Company Location | Company Type | Most Recent Production |
| 401 | Cudd Operating Corp | Oklahoma City, OK 73118 | Oil & Gas Operator | Apr 2020 |
| 402 | Culbreath Oil & Gas Co Inc | Tulsa, OK 74135 | Oil & Gas Operator | Dec 2025 |
| 403 | Cullen Corporati | | Oil & Gas Operator | Jan 1993 |
| 404 | Cullison, Jimmie I. | Moscow, KS 67952 | Oil Operator | Apr 2002 |
| 405 | Culver & Grounds | | Oil & Gas Operator | Nov 1995 |
| 406 | Culver & Grounds Oil Properties, Inc. | McPherson, KS 67460 | Oil Operator | Sep 2025 |
| 407 | Cunningham Crude, A General Partnership | Independence, KS 67301 | Oil Operator | Sep 2025 |
| 408 | Cunningham, Melvin | Medicine Lodge, KS 67104 | Oil Operator | Jan 2013 |
| 409 | Curry Oil | | Oil Operator | May 2005 |
| 410 | Curry, Gregg | Madison, KS 66860 | Oil Operator | Sep 2025 |
| 411 | Curt'S Oil Opera | | Oil Operator | Nov 1994 |
| 412 | Curt'S Oil Operation, LLC | Hoisington, KS 67544 | Oil & Gas Operator | Sep 2025 |
| 413 | Custom Oil Explo | | Oil & Gas Operator | May 1992 |
| 414 | Custom Service LLC | St John, KS 67576 | Oil Operator | Sep 2025 |
| 415 | Cutler Oil, LLC | Rantoul, KS 66079 | Oil Operator | Sep 2025 |
| 416 | CWB Oil Company, LLC | St. Francis, KS 67756 | Oil Operator | Sep 2025 |
| 417 | Cycle Oil & Gas LTD | | Gas Operator | Sep 2025 |
| 418 | Cyclone Petroleu | | Oil & Gas Operator | Nov 1995 |
| 419 | Cyclone Petroleum, Incorporated | Jenks, OK 74037 | Oil & Gas Operator | Sep 2025 |
Production numbers shown above are only for Kansas and for the production period listed.