Oil & Gas Companies in Butler County, KS
| Company Name | Company Location | Company Type | Most Recent Production |
| 1 | K & L Oil Compan | | Oil Operator | Dec 1993 |
| 2 | K R M Petroleum | | Oil & Gas Operator | Jan 1990 |
| 3 | K.C. Development, Inc. | Marion, KS 66861 | Oil Operator | Mar 2009 |
| 4 | Kansas Petroleum | | Oil & Gas Operator | Dec 1993 |
| 5 | Kantor Oil Compa | | Oil Operator | Aug 1994 |
| 6 | Kennedy & Mitche | | Oil & Gas Operator | May 1990 |
| 7 | Kenneth & Regina Laymon, LLC | Neosho Falls, KS 66758 | Oil Operator | Dec 2019 |
| 8 | Kenworthy Operating Company | Tulsa, OK 74132 | Oil & Gas Operator | May 2009 |
| 9 | Kewanee Oil Comp | | Oil & Gas Operator | Nov 1996 |
| 10 | Key Production Company, Inc. | Longview, TX 75606 | Oil & Gas Operator | Jun 2025 |
| 11 | Kiwanda Resc Inc | | Oil & Gas Operator | Aug 1993 |
| 12 | KLM Oil Operations, Inc. | El Dorado, KS 67042 | Oil Operator | Apr 1998 |
| 13 | Kutter Oil, Inc. | Eureka, KS 67045 | Oil Operator | Mar 2022 |
Production numbers shown above are only for Butler County, KS and for the production period listed.