| 2301 | Kenneco Incorpor | | Oil Operator | Sep 1984 |
| 2302 | Kennedy & Mitche | | Oil & Gas Operator | May 1990 |
| 2303 | Kenneth & Regina Laymon, LLC | Neosho Falls, KS 66758 | Oil Operator | Dec 2019 |
| 2304 | Kenneth W Cory LTD | Bellaire, TX 77401 | Oil & Gas Operator | Jan 2026 |
| 2305 | Kenny Brown Enterprises LLC | Hays, KS 67601 | Oil Operator | Jul 2013 |
| 2306 | Kent, Cameron J | Garnett, KS 66032 | Oil Operator | Dec 2025 |
| 2307 | Kent, VInce J | Garnett, KS 66032 | Oil Operator | Oct 2002 |
| 2308 | Kenworthy Operating Company | Tulsa, OK 74132 | Oil & Gas Operator | May 2009 |
| 2309 | Kephart Drilling, Inc. | Thayer, KS 66776 | Oil & Gas Operator | Dec 2008 |
| 2310 | Kepley Brothers | Chanute, KS 66720 | Oil Operator | Sep 1992 |
| 2311 | Kepley Well Service, LLC | Chanute, KS 66720 | Oil Operator | Mar 2025 |
| 2312 | Kepley, L.F. | Wichita, KS 67204 | Oil Operator | Feb 1986 |
| 2313 | Kepley, William Samuel | Chanute, KS 66720 | Oil Operator | Nov 2024 |
| 2314 | Kera-Oil | Great Bend, KS 67530 | Oil Operator | Dec 2009 |
| 2315 | Kern Co. | Houston, TX 77095 | Oil & Gas Operator | Jan 2021 |
| 2316 | Kernodle Bros. Oil & Gas, General Partnership | Raytown, MO 64133 | Oil Operator | Jun 2018 |
| 2317 | Kerr Oil, LLC | Iola, KS 66749 | Oil Operator | Dec 2009 |
| 2318 | Kerr-McGee Oil & Gas Onshore LP | Houston, TX 77046 | Oil & Gas Operator | Apr 2026 |
| 2319 | Kewanee Oil Comp | | Oil & Gas Operator | Nov 1996 |
| 2320 | Key Gas Corp. | Wichita, KS 67202 | Oil & Gas Operator | Nov 2018 |
| 2321 | Key Production Company, Inc. | Longview, TX 75606 | Oil & Gas Operator | Feb 2026 |
| 2322 | Keys Gerald W Oi | | Oil Operator | Mar 1993 |
| 2323 | Keys, Gerald Oil Production & Explor. | Humboldt, KS 66748 | Oil Operator | Mar 1999 |
| 2324 | Keyse, Ralph L. | Lane, KS 66042 | Oil Operator | Jul 2018 |
| 2325 | Keystone Oil Co. | Eureka, KS 67045 | Oil Operator | May 2000 |
| 2326 | KG Oil Co | | Oil Operator | Dec 2025 |
| 2327 | Kilby, M. T. | Yates Center, KS 66783 | Oil Operator | Sep 1986 |
| 2328 | Kimbark Oil & Ga | | Oil & Gas Operator | Aug 1992 |
| 2329 | Kimbark Oil & Gas Company | Denver, CO 80203 | Oil & Gas Operator | May 2007 |
| 2330 | Kimzey Drilling | | Oil Operator | Nov 2009 |
| 2331 | Kinderhook Oil & | | Oil Operator | Dec 1993 |
| 2332 | Kindervag Robert | | Oil Operator | Jun 1991 |
| 2333 | King Daniel L | | Oil Operator | May 1994 |
| 2334 | King Energy Co. | | Oil Operator | Nov 2019 |
| 2335 | King Energy Comp | | Oil Operator | Dec 1996 |
| 2336 | King Oil Operations, LLC | Ellis, KS 67637 | Oil Operator | Dec 2025 |
| 2337 | King Oil, Inc. | Jetmore, KS 67854 | Oil Operator | Nov 2025 |
| 2338 | King'S Well Service LLC | Blackwell, OK 74631 | Oil Operator | Dec 2025 |
| 2339 | Kingsbury Petrol | | Oil Operator | Jul 1986 |
| 2340 | Kinney Oil Company | Denver, CO 80202 | Oil Operator | Dec 2024 |
| 2341 | Kiowa Gas Company | Dallas, TX 75206 | Oil & Gas Operator | Dec 2025 |
| 2342 | Kiowa Producers, LLC | Parsons, KS 67357 | Oil & Gas Operator | Oct 2025 |
| 2343 | Kirkman W L Inco | | Oil & Gas Operator | Dec 1994 |
| 2344 | Kirkpatrick | Longton, KS 67352 | Oil Operator | Jun 2000 |
| 2345 | Kirkpatrick Oil Company | Nichols Hill, OK 73116 | Oil & Gas Operator | Apr 2026 |
| 2346 | Kirkpatrick Properties LLC | Ellinwood, KS 67526 | Oil Operator | Dec 2025 |
| 2347 | Kirkpatrick W E | Ponca City, OK 74604-4146 | Gas Operator | Oct 2001 |
| 2348 | Kiska Oil Compan | | Oil & Gas Operator | Oct 1989 |
| 2349 | Kiska Oil Company | Tulsa, OK 74114 | Oil & Gas Operator | Jan 2019 |
| 2350 | Kitchen, Robert (Deceased) | Osawatomie, KS 66064 | Oil Operator | Oct 2009 |
| 2351 | Kittle Oil | | Oil Operator | Nov 2025 |
| 2352 | Kiwanda Energy, Inc. | Denver, CO 80202 | Oil & Gas Operator | Jan 2008 |
| 2353 | Kiwanda Resc Inc | | Oil & Gas Operator | Aug 1993 |
| 2354 | Kizzar Well Servicing, Inc. | Chase, KS 67524 | Oil Operator | Dec 2025 |
| 2355 | Kjellin, Charles Willard (Deceased) | Marion, KS 66861 | Oil & Gas Operator | Oct 2013 |
| 2356 | Klabzuba Oil & Gas Inc | Denver, CO 80202 | Oil & Gas Operator | Aug 2012 |
| 2357 | KLB Operating, Inc. | Plainville, KS 67663 | Oil Operator | Aug 2001 |
| 2358 | Klenda, John | Marion, KS 66861 | Gas Operator | Dec 2023 |
| 2359 | Klima Oil, Inc. | Great Bend, KS 67530 | Oil Operator | Dec 2009 |
| 2360 | Klima Well Servi | | Oil Operator | Dec 1996 |
| 2361 | Klima Well Service, Inc. | Great Bend, KS 67530 | Oil & Gas Operator | Nov 2025 |
| 2362 | Klippel, B.W., Jr. | Wichita, KS 67220 | Oil Operator | May 1999 |
| 2363 | KLM Exploration Company, Inc. | McLouth, KS 66054 | Oil Operator | Dec 2019 |
| 2364 | KLM Oil Operations, Inc. | El Dorado, KS 67042 | Oil Operator | Apr 1998 |
| 2365 | KLM Operating | | Oil & Gas Operator | Mar 2025 |
| 2366 | KLMKH Inc | Charlotte, NC 28270 | Oil Operator | Sep 2025 |
| 2367 | Kloberdanz Paul | | Gas Operator | Apr 1991 |
| 2368 | Kloberdanz Paul E | Oklahoma City, OK 73157 | Oil & Gas Operator | Aug 2021 |
| 2369 | Klondike Investments, Inc. | Paola, KS 66071 | Oil Operator | Sep 2011 |
| 2370 | KN Production Company | Lakewood, CO 80228 | Oil & Gas Operator | Jun 2003 |
| 2371 | Knife River Oil, LLC | Bull Shoals, AR 72619 | Oil Operator | Feb 2017 |
| 2372 | Knight Oil Company | Victoria, KS 67671 | Gas Operator | Dec 2025 |
| 2373 | Knight, Joeann | Kilgore, TX 75662 | Oil Operator | Sep 1989 |
| 2374 | Knighton Oil Com | | Oil & Gas Operator | Nov 1996 |
| 2375 | Knighton Oil Company, Inc. | Wichita, KS 67206 | Oil & Gas Operator | Dec 2025 |
| 2376 | Koch Exploration | | Oil & Gas Operator | Oct 1988 |
| 2377 | Koch Exploration Company | Houston, TX 77046 | Oil & Gas Operator | Apr 2003 |
| 2378 | Kodiak Energy LLC | Pineville, MO 64856 | Oil Operator | Dec 2019 |
| 2379 | Kodiak Oil Co. | Stockton, MO 65785 | Oil Operator | May 1996 |
| 2380 | Kodiak Petroleum Inc | Englewood, CO 80155 | Oil & Gas Operator | Dec 2025 |
| 2381 | Koehn Alfred D | | Oil & Gas Operator | Sep 1994 |
| 2382 | Koehn Eldon R | | Oil Operator | Dec 2009 |
| 2383 | Koehn Radell W | | Oil Operator | Dec 2009 |
| 2384 | Koehn, Alfred D.(Deceased) | Galva, KS 67443 | Oil Operator | Mar 1998 |
| 2385 | Koehn, Carolyn | Galva, KS 67443 | Oil Operator | Dec 2025 |
| 2386 | Koehn, John W. | Sublette, KS 67877 | Gas Operator | May 2018 |
| 2387 | Koehn, Max R. | Copeland, KS 67837 | Oil & Gas Operator | Oct 2019 |
| 2388 | Koehn, Radell W. And Austin Koehn & Morgan Koehn | Galva, KS 67443 | Oil Operator | Dec 2025 |
| 2389 | Koehn, Roger D. | Galva, KS 67443 | Oil Operator | Apr 1998 |
| 2390 | Kop-Mor Producti | | Oil Operator | Sep 1992 |
| 2391 | Kopco Inc | Caney, KS 67333 | Oil & Gas Operator | Oct 2025 |
| 2392 | Koron Investments, Inc. | Hays, KS 67601 | Oil Operator | Dec 2025 |
| 2393 | Kot, Inc. | Lost Springs, KS 66859 | Oil Operator | Aug 2016 |
| 2394 | Kottwitz Oil Co., A General Partnership | | Oil Operator | Jul 2019 |
| 2395 | KP Oil, LLC | | Oil & Gas Operator | Dec 2025 |
| 2396 | Kracken Operating LLC | Lawrence, KS 66047 | Oil Operator | Dec 2019 |
| 2397 | Kraft Oil Compan | | Oil Operator | Nov 1994 |
| 2398 | Kraft Oil Company LLC | Gridley, KS 66852 | Oil Operator | Dec 2025 |
| 2399 | Kraft, Jim - Oil Operations | Holyrood, KS 67450 | Oil Operator | Jan 1999 |
| 2400 | Kramer Oil Field Service Inc | Wellsville, KS 66092 | Oil Operator | May 2019 |