Oil & Gas Companies in Montgomery County, KS
| Company Name | Company Location | Company Type | Most Recent Production |
| 301 | Walls, Charles A. | Caney, KS 67333 | Oil Operator | Aug 2016 |
| 302 | Walton, Tara | Copan, OK 74022 | Oil Operator | Aug 2025 |
| 303 | Warner Oil Prod | | Oil Operator | Apr 1995 |
| 304 | Watt Larry | Copan, OK 74022 | Oil Operator | Oct 2019 |
| 305 | Wayside Angus Fa | | Oil & Gas Operator | Sep 2002 |
| 306 | Wayside Prod Com | | Oil Operator | May 1984 |
| 307 | Wehmeyer, Gerald | Independence, KS 67301 | Oil Operator | Aug 2024 |
| 308 | Wells-Battelstei | | Oil & Gas Operator | Mar 1993 |
| 309 | Western Fuel & S | | Oil Operator | Oct 1987 |
| 310 | Wildfire Oil & Gas Inc | Tulsa, OK 74136 | Oil & Gas Operator | Mar 2014 |
| 311 | Williams Robert | | Oil & Gas Operator | Apr 1995 |
| 312 | Williams, Robert J. | Independence, KS 67301 | Oil Operator | May 2019 |
| 313 | Willis Energy | Neodesha, KS 66757 | Oil & Gas Operator | Dec 2009 |
| 314 | Windgate Oil Com | | Oil Operator | Jul 1985 |
| 315 | Wood Donald E | Independence, KS 67301 | Oil & Gas Operator | Dec 2024 |
| 316 | Yager Company | Hutchinson, KS 67502 | Oil & Gas Operator | Dec 2000 |
| 317 | Yocham Oil Company | | Oil Operator | Sep 2025 |
| 318 | Yukon Properties LLC | Villa Park, CA 92861 | Oil & Gas Operator | Sep 2017 |
| 319 | Zeiders Bros. Oil & Gas Company, L.L.C. | Edmond, OK 73003 | Oil & Gas Operator | Dec 2025 |
| 320 | Zoandra Petroleu | | Oil & Gas Operator | May 1993 |
Production numbers shown above are only for Montgomery County, KS and for the production period listed.