| 3301 | KRS Oil Company | Frisco, TX 75034 | Oil & Gas Operator | Apr 2020 |
| 3302 | Krumme Oil Company LLP | Bristow, OK 74010 | Oil & Gas Operator | Jan 2026 |
| 3303 | Krumme Wesley J | Oklahoma City, OK 73120 | Oil & Gas Operator | Jun 1997 |
| 3304 | KSW Operating,LLC | | Oil & Gas Operator | Mar 2015 |
| 3305 | KT Energy Inc | Enid, OK 73702-2365 | Oil & Gas Operator | Dec 2025 |
| 3306 | KT Investments Inc | Hennessey, OK 73742 | Oil & Gas Operator | Jan 2026 |
| 3307 | KTP Energy, Inc. | Denver, CO 80226 | Oil & Gas Operator | Aug 2019 |
| 3308 | Kuran Resources Inc | Wichita Falls, TX 76305 | Oil Operator | Jul 2021 |
| 3309 | KWB Oil Property Management Inc | Tulsa, OK 74103 | Oil & Gas Operator | Dec 2025 |
| 3310 | Ky Oil Co | Palco, KS 67657 | Oil & Gas Operator | Aug 2000 |
| 3311 | Kybenco Disposals LLC | Lindsay, OK 73052 | Oil Operator | Feb 2026 |
| 3312 | Kyler Oil Company | Pawhuska, OK 74056-0117 | Oil Operator | Nov 1998 |
| 3313 | L & B Oil Company Inc | Dallas, TX 75225 | Oil & Gas Operator | Mar 2025 |
| 3314 | L & F Oil Company | Duncan, OK 73533-3636 | Oil Operator | Jun 2009 |
| 3315 | L & G Petroleum Operating, LLC | Havana, KS 67347 | Oil Operator | Sep 2025 |
| 3316 | L & H Energy Inc | Cherryvale, KS 67335 | Oil & Gas Operator | Sep 2019 |
| 3317 | L & L Producers | Independence, KS 67301 | Oil Operator | Dec 2025 |
| 3318 | L & L Smith Energy Corporation | Muskogee, OK 74403-8479 | Oil & Gas Operator | Jan 2023 |
| 3319 | L & M Oil Co. | Yates Center, KS 66783 | Oil & Gas Operator | Dec 1998 |
| 3320 | L & N Exploration Inc | | Oil & Gas Operator | Jul 2013 |
| 3321 | L & R Energy Corporation | Spearman, TX 79081 | Oil & Gas Operator | Nov 2014 |
| 3322 | L & R Oil Company | Oakley, KS 67748 | Oil & Gas Operator | Jan 2004 |
| 3323 | L & T Disposal LLC | Wilson, OK 73463-6545 | Oil Operator | Mar 2016 |
| 3324 | L And L Production Company | Skellytown, TX 79080 | Oil & Gas Operator | Sep 1996 |
| 3325 | L B G Operating Co | Fairfax, OK 74037 | Oil & Gas Operator | Oct 2014 |
| 3326 | L D & Associates | Broken Arrow, OK 74014-1712 | Oil Operator | Feb 2012 |
| 3327 | L&L Oil Company LLC | Copan, OK 74022-4608 | Oil Operator | Mar 2014 |
| 3328 | L.E. Jones Operating, Inc. | Duncan, OK 73534 | Oil & Gas Operator | Jan 2026 |
| 3329 | L.L. Oil Company | Freer, TX 78357 | Oil & Gas Operator | Mar 2026 |
| 3330 | Labo Oil Company Inc | Drumright, OK 74030-5619 | Oil & Gas Operator | Jul 2025 |
| 3331 | Lackey Danny | Kiefer, OK 74041-0702 | Oil & Gas Operator | Oct 2022 |
| 3332 | Lackey Raymond R | Lindsay, OK 73052 | Oil & Gas Operator | Jun 2015 |
| 3333 | Lackey Raymond R & Assoc | Sulphur, OK 73086 | Oil & Gas Operator | Dec 2025 |
| 3334 | Lackey WM Oil & Gas Oper Co | Shawnee, OK 74801 | Oil & Gas Operator | Jan 1994 |
| 3335 | Ladd LLC | El Reno, OK 73036 | Oil & Gas Operator | Nov 2018 |
| 3336 | Ladd Petroleum Corp. | Denver, CO 80202 | Oil & Gas Operator | Oct 2004 |
| 3337 | Ladder Energy Company | Tulsa, OK 74120-4281 | Oil & Gas Operator | Jan 2018 |
| 3338 | Lagoon Water Logistics LLC | Oklahoma City, OK 73103 | Oil Operator | Jul 2024 |
| 3339 | Laguna Petroleum Corporation | Houston, TX 77046 | Oil & Gas Operator | Mar 2026 |
| 3340 | Lahoma Production Inc | Jenks, OK 74037 | Oil & Gas Operator | Jan 2026 |
| 3341 | Laird Anita Louise | Asher, OK 74826-3215 | Oil Operator | Jun 2018 |
| 3342 | Laird Bill Oil Company | St Louis, OK 74866 | Oil & Gas Operator | Dec 2025 |
| 3343 | Lake Country Disposal II LLC | Wilson, OK 73463 | Oil Operator | Dec 2025 |
| 3344 | Lake Country Disposal LLC | Ardmore, OK 73401 | Oil Operator | Oct 2024 |
| 3345 | Lake Ronel Oil Company | Tyler, TX 75710 | Oil & Gas Operator | Jul 2017 |
| 3346 | Lakeland Pipeline Inc | Hominy, OK 74035-1006 | Oil & Gas Operator | Jun 2023 |
| 3347 | Lakeshore Operating, LLC | Wichita, KS 67203 | Oil & Gas Operator | Mar 2026 |
| 3348 | Lakewood Disposal LLC | Tulsa, OK 74136-1031 | Oil Operator | Aug 2018 |
| 3349 | Lakewood Energy Solutions LLC | | Oil Operator | Jun 2016 |
| 3350 | Lakewood Oil Company LLC | Mission Hills, KS 66208-2735 | Oil & Gas Operator | May 2013 |
| 3351 | Lakota Oil & Gas | Comanche, OK 73529-9602 | Oil & Gas Operator | May 2014 |
| 3352 | Lam Financial Holdings LTD | Greenwood VIllage, CO 80111 | Oil Operator | Dec 2025 |
| 3353 | Lamamco Drilling Company | Skiatook, OK 74070 | Oil & Gas Operator | Dec 2025 |
| 3354 | Lamb Alan L | Oklahoma City, OK 73120-7824 | Oil & Gas Operator | Feb 2020 |
| 3355 | Lambdin William H | Oklahoma City, OK 73120 | Oil & Gas Operator | Nov 1998 |
| 3356 | Lambert Company LLC | Ardmore, OK 73401 | Oil & Gas Operator | Dec 2025 |
| 3357 | Lambert Company The | Healdton, OK 73438-0962 | Oil & Gas Operator | Feb 2023 |
| 3358 | Lambert Oil & Gas LLC | Holdenville, OK 74848 | Oil & Gas Operator | Dec 2025 |
| 3359 | Lamberton Oil Co Inc | Tulsa, OK 74107 | Oil & Gas Operator | May 2013 |
| 3360 | Lamberton W J | Tulsa, OK 74119 | Oil & Gas Operator | Apr 2015 |
| 3361 | Lamima Corporation | Ardmore, OK 73401 | Oil Operator | Nov 1994 |
| 3362 | Laml Compaines LLC | Cleveland, OK 74020 | Oil Operator | Dec 2025 |
| 3363 | Lammerts Robert P | Oklahoma City, OK 73102 | Oil & Gas Operator | Jan 2002 |
| 3364 | Lance Ruffel Oil & Gas LLC | Oklahoma City, OK 73102-5632 | Oil & Gas Operator | Jan 2026 |
| 3365 | Lancer Energy Corporation | Oklahoma City, OK 73132-5903 | Oil & Gas Operator | May 2015 |
| 3366 | Lancer Petroleum Corporation | Irving, TX 75014 | Oil & Gas Operator | Feb 2014 |
| 3367 | Landers & Musgrove | Okemah, OK 74859 | Oil & Gas Operator | Mar 2015 |
| 3368 | Landers & Musgrove Oil Co. Inc | Okemah, OK 74859-0266 | Oil & Gas Operator | Jan 2018 |
| 3369 | Landers & Waldman Inc | Okemah, OK 74859-0660 | Oil & Gas Operator | May 2013 |
| 3370 | Landers Oil & Gas Inc | Tulsa, OK 74132-2171 | Oil & Gas Operator | Dec 2025 |
| 3371 | Landers Production Company | Granite, OK 73547-0093 | Oil Operator | Apr 2014 |
| 3372 | Landmark Energy LLC | Seminole, OK 74868 | Oil & Gas Operator | Dec 2025 |
| 3373 | Landmark Exploration Co | Tulsa, OK 74103 | Oil & Gas Operator | Oct 2013 |
| 3374 | Landmark Operating Company | Welty, OK 74833-3923 | Oil Operator | Aug 2015 |
| 3375 | Landmark Production Company | MC Gregor, TX 76657 | Oil & Gas Operator | Oct 2010 |
| 3376 | Langham Petroleum Expl. Corp. | Houston, TX 77056 | Oil & Gas Operator | Dec 2009 |
| 3377 | Langley Harold | Graham, OK 73437 | Oil Operator | Dec 2025 |
| 3378 | Lansden Operating Co LLC | Norman, OK 73070 | Oil & Gas Operator | Dec 1997 |
| 3379 | Lapetco Inc | Plano, TX 75093 | Oil & Gas Operator | Aug 2024 |
| 3380 | Lar-Mie Petroleum Inc | Tulsa, OK 74136 | Oil & Gas Operator | Aug 1998 |
| 3381 | Laran Operating LLC | Dover, OK 73734-0057 | Oil & Gas Operator | Mar 2015 |
| 3382 | Laredo Petroleum Inc | Tulsa, OK 74120 | Oil & Gas Operator | Mar 2023 |
| 3383 | Lariat Energy & Supply Co Inc | Hulbert, OK 74441 | Oil & Gas Operator | Dec 2025 |
| 3384 | Lariat Petroleum Inc | Tulsa, OK 74119 | Oil & Gas Operator | Sep 2024 |
| 3385 | Lario Oil & Gas Company | Odessa, TX 79762 | Oil & Gas Operator | Mar 2026 |
| 3386 | Larkin Energy Company Inc | Sasakwa, OK 74867 | Oil & Gas Operator | May 2022 |
| 3387 | Larkin Oil Co | Sasakwa, OK 74867 | Oil & Gas Operator | Aug 2015 |
| 3388 | Larkspur Operating LLC | Oklahoma City, OK 73106 | Oil & Gas Operator | Dec 2025 |
| 3389 | Larmore Jr James E | Bartlesville, OK 74006-8312 | Oil Operator | Mar 2017 |
| 3390 | Larron Energy Corporation | New Braunfels, TX 78132 | Oil & Gas Operator | Mar 2015 |
| 3391 | Larry Brown Dba Brown Oil Company | Ardmore, OK 73401 | Oil Operator | Apr 2015 |
| 3392 | Larry Sherman Oil LLC | Chandler, OK 74834 | Oil & Gas Operator | Dec 2025 |
| 3393 | Larry Wolff Dba Wolff'S Oilfield Service | Cushing, OK 74023-9789 | Oil & Gas Operator | Dec 2025 |
| 3394 | Larson Exploration Company | Tulsa, OK 74136-4939 | Oil & Gas Operator | Jul 2016 |
| 3395 | Larson Operating Company | Olmitz, KS 67564-8561 | Oil & Gas Operator | Dec 2019 |
| 3396 | Las Colinas Oil Corp. | Irving, TX 75062 | Oil & Gas Operator | Mar 2015 |
| 3397 | Lashley Oil Company Inc | Walters, OK 73572 | Oil Operator | Dec 2014 |
| 3398 | Lasmo Energy Corporation | Tulsa, OK 74136 | Oil & Gas Operator | Jan 2024 |
| 3399 | Last Run LLC | Rillito, AZ 85246 | Oil & Gas Operator | May 2020 |
| 3400 | Latex Petroleum Corp. | Houston, TX 77090 | Oil & Gas Operator | Aug 2012 |