Oil & Gas Companies in Montgomery County, KS
| Company Name | Company Location | Company Type | Most Recent Production |
| 301 | Unknown | Houston, TX 77208 | Oil & Gas Operator | Dec 2023 |
| 302 | Uranus, Inc. | Kansas City, MO 64112 | Oil Operator | Jan 2000 |
| 303 | Usx Operating Co., Inc. | Barnstall, OK 74002 | Oil & Gas Operator | Apr 2017 |
| 304 | Vci Production | Jarales, NM 87023 | Oil Operator | Jan 1997 |
| 305 | Veenker Resources Inc | Oklahoma City, OK 73113 | Oil & Gas Operator | Nov 2025 |
| 306 | Verde Oil Company | San Antonio, TX 78209 | Oil & Gas Operator | Sep 2025 |
| 307 | Verdigris Energy | | Gas Operator | Jun 1983 |
| 308 | W.R.A. Oil Co. | | Oil & Gas Operator | Mar 2025 |
| 309 | Walls, Charles A. | Caney, KS 67333 | Oil Operator | Aug 2016 |
| 310 | Walton, Tara | Copan, OK 74022 | Oil Operator | Aug 2025 |
| 311 | Warner Oil Prod | | Oil Operator | Apr 1995 |
| 312 | Watt Larry | Copan, OK 74022 | Oil Operator | Oct 2019 |
| 313 | Wayside Angus Fa | | Oil & Gas Operator | Sep 2002 |
| 314 | Wayside Prod Com | | Oil Operator | May 1984 |
| 315 | Wehmeyer, Gerald | Independence, KS 67301 | Oil Operator | Aug 2024 |
| 316 | Wells-Battelstei | | Oil & Gas Operator | Mar 1993 |
| 317 | Western Fuel & S | | Oil Operator | Oct 1987 |
| 318 | Wildfire Oil & Gas Inc | Tulsa, OK 74136 | Oil & Gas Operator | Mar 2014 |
| 319 | Williams Robert | | Oil & Gas Operator | Apr 1995 |
| 320 | Williams, Robert J. | Independence, KS 67301 | Oil Operator | May 2019 |
| 321 | Willis Energy | Neodesha, KS 66757 | Oil & Gas Operator | Dec 2009 |
| 322 | Windgate Oil Com | | Oil Operator | Jul 1985 |
| 323 | Wood Donald E | Independence, KS 67301 | Oil & Gas Operator | Dec 2024 |
| 324 | Yager Company | Hutchinson, KS 67502 | Oil & Gas Operator | Dec 2000 |
| 325 | Yocham Oil Company | | Oil Operator | Sep 2025 |
| 326 | Yukon Properties LLC | Villa Park, CA 92861 | Oil & Gas Operator | Sep 2017 |
| 327 | Zeiders Bros. Oil & Gas Company, L.L.C. | Edmond, OK 73003 | Oil & Gas Operator | Oct 2025 |
| 328 | Zoandra Petroleu | | Oil & Gas Operator | May 1993 |
Production numbers shown above are only for Montgomery County, KS and for the production period listed.