| 2301 | JRC Productions, LLC | Pittsburg, KS 66762 | Gas Operator | Oct 2008 |
| 2302 | JT Enterprises | Gorham, KS 67640 | Oil Operator | Aug 1990 |
| 2303 | JTC Oil Inc. | Louisburg, KS 66053 | Oil Operator | Sep 2025 |
| 2304 | Judson Enterprises, Inc. | Emporia, KS 66801 | Oil Operator | Sep 2025 |
| 2305 | Judy Company Inc | Kansas City, KS 66111 | Oil & Gas Operator | May 2013 |
| 2306 | Jug Enterprises | | Oil Operator | Jan 1988 |
| 2307 | Justin Energy Corporation | Wellsville, KS 66092 | Oil Operator | Sep 2025 |
| 2308 | K & A Development LLC | Wellsville, KS 66092 | Oil Operator | Sep 2025 |
| 2309 | K & A Oil, A General Partnership | Longton, KS 67352 | Oil Operator | Sep 2025 |
| 2310 | K & D Oil Compan | | Oil Operator | Apr 1994 |
| 2311 | K & E Drilling I | | Oil & Gas Operator | Sep 1995 |
| 2312 | K & E Drilling, Inc | Wichita, KS 67202 | Oil & Gas Operator | Sep 2025 |
| 2313 | K & E Petroleum | | Oil & Gas Operator | Jan 1995 |
| 2314 | K & E Petroleum, Inc. | San Antonio, TX 78230 | Oil & Gas Operator | Apr 2012 |
| 2315 | K & G Oil Incorp | | Oil Operator | Mar 1988 |
| 2316 | K & K Oil | Chase, KS 67524 | Oil & Gas Operator | Oct 2019 |
| 2317 | K & L Oil Compan | | Oil Operator | Dec 1993 |
| 2318 | K & L Tank Truck | | Oil Operator | Aug 1987 |
| 2319 | K & L Tank Truck Service, Inc. | Garden City, KS 67846 | Oil Operator | Apr 2023 |
| 2320 | K & N Petroleum, Inc. | Great Bend, KS 67530 | Oil Operator | Sep 2025 |
| 2321 | K C Crude Inc | Lenexa, KS 66215 | Oil & Gas Operator | Dec 2000 |
| 2322 | K C Crude Incorp | | Oil & Gas Operator | Mar 1994 |
| 2323 | K C Development | | Oil & Gas Operator | Dec 1996 |
| 2324 | K C Resources In | | Oil & Gas Operator | Oct 1993 |
| 2325 | K Explorations | | Gas Operator | May 1984 |
| 2326 | K N Energy Inc | Lakewood, CO 80228 | Oil & Gas Operator | Nov 2000 |
| 2327 | K N Processing | | Gas Operator | Mar 1999 |
| 2328 | K R M Petroleum | | Oil & Gas Operator | Jan 1990 |
| 2329 | K S Oil Company Inc | Norman, OK 73072-7480 | Oil & Gas Operator | Dec 2025 |
| 2330 | K W Drilling, Inc. | Topeka, KS 66617 | Gas Operator | Sep 1991 |
| 2331 | K W Oil Well Service. Inc. | Chanute, KS 66720 | Oil Operator | Apr 2017 |
| 2332 | K&M LLC | | Oil Operator | Aug 2025 |
| 2333 | K-3 Energy Corpo | | Oil Operator | May 1988 |
| 2334 | K-Bar Oil LLC | McPherson, KS 67460 | Oil Operator | Sep 2025 |
| 2335 | K-W Oil - Evans | | Oil Operator | Jan 1994 |
| 2336 | K.B. Oil & Gas | | Oil & Gas Operator | Dec 2025 |
| 2337 | K.C. Development, Inc. | Marion, KS 66861 | Oil Operator | Mar 2009 |
| 2338 | K.C. Energy | Kansas City, MO 64111 | Oil Operator | Apr 1986 |
| 2339 | K.C. Operations | | Oil Operator | Aug 2025 |
| 2340 | K.E. Snyder Co., LLC | Hamilton, KS 66853 | Oil Operator | Sep 2025 |
| 2341 | K.J.S. Oil | | Oil & Gas Operator | Sep 2025 |
| 2342 | K.W.S. Oil Development | Chanute, KS 66720 | Oil Operator | May 2004 |
| 2343 | K3 Oil & Gas Operating Company | Spring, TX 77383 | Oil & Gas Operator | Nov 2025 |
| 2344 | K3 Resources, Inc. | Garden City, KS 67846 | Gas Operator | Aug 2013 |
| 2345 | Ka Tex Energies, Inc. | Iola, TX 77861 | Oil & Gas Operator | May 1999 |
| 2346 | Kachina Oil Comp | | Oil & Gas Operator | Jan 1988 |
| 2347 | Kachina Oil Company | Wichita, KS 67202 | Gas Operator | Sep 1998 |
| 2348 | Kahan & Assoc In | | Oil Operator | Dec 1996 |
| 2349 | Kahan & Associates Inc | Tulsa, OK 74170 | Oil & Gas Operator | Dec 2025 |
| 2350 | Kainz, David R. | Ottawa, KS 66067 | Oil Operator | Aug 2009 |
| 2351 | Kaiser-Francis O | | Oil & Gas Operator | Oct 1995 |
| 2352 | Kaiser-Francis Oil | | Oil Operator | Nov 1995 |
| 2353 | Kaiser-Francis Oil Company | Tulsa, OK 74121 | Oil & Gas Operator | Feb 2026 |
| 2354 | Kal Oil Operations | | Oil Operator | Jun 2025 |
| 2355 | Kamc Oil & Gas LLC | Queen Creek, AZ 85142 | Oil Operator | Jan 2011 |
| 2356 | Kan-Cal Enterpri | | Oil Operator | Dec 1988 |
| 2357 | Kan-Ex Incorpora | | Oil & Gas Operator | Jan 1985 |
| 2358 | Kan-Texco Incorp | | Oil & Gas Operator | Dec 1994 |
| 2359 | Kanaco Oil Company | | Oil Operator | Apr 2025 |
| 2360 | Kanalta Resources, LTD. | Yates Center, KS 66783 | Oil Operator | Jan 1998 |
| 2361 | Kanmap Incorpora | | Oil & Gas Operator | Dec 1995 |
| 2362 | Kanmap, A Kansas Corporation | Independence, KS 67301 | Oil & Gas Operator | Aug 2025 |
| 2363 | Kano Partners | | Oil Operator | Sep 1989 |
| 2364 | Kanok Energy LLC | Henryetta, OK 74437 | Gas Operator | Nov 2023 |
| 2365 | Kansas Bourse In | | Oil & Gas Operator | Apr 1985 |
| 2366 | Kansas City Oil, LLC | Parkville, MO 64152 | Oil Operator | Aug 2025 |
| 2367 | Kansas Crude Investments LLC | Hays, KS 67601 | Oil Operator | Sep 2025 |
| 2368 | Kansas Crude Oil | | Oil Operator | Dec 1987 |
| 2369 | Kansas Crude Resources, LLC | | Oil Operator | Sep 2025 |
| 2370 | Kansas Crude, Inc. | Hutchinson, KS 67501 | Oil & Gas Operator | Apr 2003 |
| 2371 | Kansas Energy Company, L.L.C. | Sedan, KS 67361 | Oil & Gas Operator | Sep 2025 |
| 2372 | Kansas Gas Co., Inc. | Wichita Falls, TX 76310 | Gas Operator | Sep 2025 |
| 2373 | Kansas Gas Service | | Oil Operator | Nov 1996 |
| 2374 | Kansas Gas Suppl | | Gas Operator | Sep 1984 |
| 2375 | Kansas Horizon O | | Oil & Gas Operator | Jun 1994 |
| 2376 | Kansas Horizon Oil, Inc. | Windom, KS 67491 | Oil Operator | May 2017 |
| 2377 | Kansas Ka-Tex Joint Venture, A General Partnership | San Antonio, TX 78216 | Gas Operator | Aug 2011 |
| 2378 | Kansas MB Project, LLC | Skiatook, OK 74070 | Oil & Gas Operator | Sep 2024 |
| 2379 | Kansas Natural G | | Oil & Gas Operator | Dec 1996 |
| 2380 | Kansas Natural Gas Operating, LC | Hays, KS 67601 | Gas Operator | Sep 2025 |
| 2381 | Kansas Natural Gas, Inc. | Hays, KS 67601 | Gas Operator | Sep 2025 |
| 2382 | Kansas Oil Company | Kansas City, KS 66117 | Oil Operator | May 1997 |
| 2383 | Kansas Oil Prope | | Oil & Gas Operator | Sep 1991 |
| 2384 | Kansas Oil, Inc. | Chanute, KS 66720 | Oil Operator | Dec 2009 |
| 2385 | Kansas Oil, LLC | | Oil Operator | Sep 2025 |
| 2386 | Kansas Operating Co., Inc. | Sedan, KS 67361 | Gas Operator | Jan 2004 |
| 2387 | Kansas Petroleum | | Oil & Gas Operator | Dec 1993 |
| 2388 | Kansas Petroleum, Inc. | Wichita, KS 67202 | Oil & Gas Operator | Jul 2007 |
| 2389 | Kansas Power & L | | Oil Operator | Mar 1982 |
| 2390 | Kansas Renewable Resources, LLC | Great Bend, KS 67530 | Oil Operator | Sep 2025 |
| 2391 | Kansas Resource Exploration & Development, LLC | Overland Park, KS 66202 | Oil Operator | Sep 2025 |
| 2392 | Kansas Shallow L | | Gas Operator | Oct 1990 |
| 2393 | Kansons Oil Co. | | Oil Operator | Jan 2014 |
| 2394 | Kantor Oil Compa | | Oil Operator | Aug 1994 |
| 2395 | Kantor Oil Company LLC | Tulsa, OK 74136 | Oil & Gas Operator | Nov 2025 |
| 2396 | Karbank, Barney | Kansas City, MO 64199 | Oil Operator | Sep 2001 |
| 2397 | Karper Oil & Gas Corporation | Graham, TX 76450 | Oil & Gas Operator | Feb 2026 |
| 2398 | Karst Brothers Oil Co, A General Partnership | Russell, KS 67665 | Oil Operator | Sep 2025 |
| 2399 | Karst Don Well S | | Oil Operator | Oct 1990 |
| 2400 | Karst, Elmer L | Russell, KS 67665 | Oil Operator | Feb 1990 |