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