| 401 | Ingersoll Oil Inc | Hominy, OK 74035 | Oil & Gas Operator | Jun 2000 |
| 402 | Integrated Energy Service Corp | Cleveland, OK 74020 | Oil & Gas Operator | Nov 1998 |
| 403 | Iron Hawk Energy Group Joint Venture | | Oil & Gas Operator | Jan 2024 |
| 404 | J B Hulet | | Oil & Gas Operator | Aug 2013 |
| 405 | J Petroleum, Inc. | San Antonio, TX 78247 | Oil & Gas Operator | Aug 2003 |
| 406 | J. C. Oil Company | Odessa, TX 79766 | Oil & Gas Operator | Mar 2015 |
| 407 | Jaco, Troy Inc. | Sherman, TX 75091 | Oil & Gas Operator | May 2024 |
| 408 | Jaed Oil Production Co Inc | Arkansas City, KS 67005-0902 | Oil & Gas Operator | Mar 2015 |
| 409 | James Oil Company | Compton, CA 90221-4399 | Oil & Gas Operator | Nov 2008 |
| 410 | James Raymond L | Sapulpa, OK 74066-8785 | Oil & Gas Operator | Jan 2024 |
| 411 | Jay B Harden | | Oil Operator | Jan 2024 |
| 412 | Jay Management Company LLC | Houston, TX 77057 | Oil & Gas Operator | May 2024 |
| 413 | Jay Petroleum Inc | Oklahoma City, OK 73154-0526 | Oil & Gas Operator | Mar 2019 |
| 414 | JBD Oklahoma, L.L.C. | | Oil & Gas Operator | Jan 2024 |
| 415 | Jedd Oil Co | Hominey, OK 74035 | Oil & Gas Operator | Jan 2024 |
| 416 | Jeffries Pumping Service Inc | Guthrie, OK 73044-8761 | Oil & Gas Operator | Jan 2024 |
| 417 | Jenkins Charles L | Edmond, OK 73083-3610 | Oil Operator | Jul 1996 |
| 418 | Jesse T Hough Dba Box L Operating | | Oil Operator | Feb 2024 |
| 419 | Jireh Resources LLC | | Oil Operator | Jan 2024 |
| 420 | Joint Resources Company | Fort Worth, TX 76107 | Oil & Gas Operator | May 2024 |
| 421 | Jones And Buck | Sedan, KS 67361 | Oil & Gas Operator | Jan 2024 |
| 422 | Jones Jr Lee R | Sedan, KS 67361 | Oil & Gas Operator | Jun 2008 |
| 423 | Jones Michael | Pawhuska, OK 74056 | Oil Operator | Jan 1995 |
| 424 | Jones, Bobby E | | Oil Operator | Nov 2005 |
| 425 | Jovian Petroleum Corporation | Houston, TX 77024 | Oil & Gas Operator | Jan 2016 |
| 426 | JSD Resources Corporation | Barnsdall, OK 74002-3272 | Oil & Gas Operator | Jan 2024 |
| 427 | Jse Investments Inc | | Oil Operator | Jan 2024 |
| 428 | K G Operating | Hennessey, OK 73742 | Oil & Gas Operator | May 1999 |
| 429 | K-C Oil Co. | Luling, TX 78648 | Oil & Gas Operator | Jan 2013 |
| 430 | Kahan And Associates, Inc | Tulsa, OK 74170 | Oil & Gas Operator | Jan 2024 |
| 431 | Kantor Oil Company, LLC | Tulsa, OK 74136 | Oil & Gas Operator | Jan 2024 |
| 432 | Kelley Joe Bob | Barnsdall, OK 74002 | Oil & Gas Operator | Jan 2024 |
| 433 | Kemp Roy L | | Oil Operator | Jan 2011 |
| 434 | Kennedy Tracy | Wynona, OK 74084 | Oil Operator | Jan 2024 |
| 435 | Kennedy, Howard E | | Oil & Gas Operator | May 1997 |
| 436 | Kerbs Daris | Bartlesville, OK 74003 | Oil Operator | Jul 2018 |
| 437 | Keystone Gas Corporation | Drumright, OK 7403O | Oil & Gas Operator | Apr 2015 |
| 438 | Keystone Oil And Gas Company LLC | | Oil & Gas Operator | Jan 2024 |
| 439 | Kile Production | Cypress, TX 77410 | Oil & Gas Operator | Aug 2014 |
| 440 | KJB Oil Company LLC | Dewey, OK 74029-3053 | Oil Operator | Dec 2023 |
| 441 | Klabzuba Royalty Company | Prague, OK 74864-0567 | Oil & Gas Operator | Dec 2019 |
| 442 | Klo LLC | Tulsa, OK 74120-2428 | Oil & Gas Operator | Feb 2024 |
| 443 | Koch Hydrocarbon Company | Wichita, KS 67220-3203 | Oil & Gas Operator | Nov 2014 |
| 444 | Koch Oil Company | | Oil & Gas Operator | May 2017 |
| 445 | Kornblit, Majir | | Oil Operator | Nov 1998 |
| 446 | Krebbs A N & Kay | Pawhuska, OK 74056 | Oil Operator | Jan 2024 |
| 447 | Krebbs, David B | | Oil & Gas Operator | Jan 2024 |
| 448 | Krotzer Oil Company | Cleveland, OK 74020-0383 | Oil & Gas Operator | Feb 2024 |
| 449 | Krumme Oil Company LLP | Bristow, OK 74010-0749 | Oil & Gas Operator | Jan 2024 |
| 450 | KSW Operating LLC | Bartlesville, OK 74006 | Oil & Gas Operator | Mar 2015 |
| 451 | KWB Oil Property Management Inc | Tulsa, OK 74103 | Oil & Gas Operator | Jan 2024 |
| 452 | Kybenco Disposals LLC | | Oil Operator | Sep 2022 |
| 453 | Kyler Oil Company | Pawhuska, OK 74056-0117 | Oil Operator | Nov 1998 |
| 454 | L & L Producers | Independence, KS 67301 | Oil Operator | Jan 2024 |
| 455 | L B G Operating Co | Fairfax, OK 74037 | Oil & Gas Operator | Oct 2014 |
| 456 | Lake Country Disposal II LLC | | Oil Operator | Jan 2024 |
| 457 | Lake Country Disposal LLC | | Oil Operator | Jan 2024 |
| 458 | Lamamco Drilling Company | Skiatook, OK 74070 | Oil & Gas Operator | Jan 2024 |
| 459 | Laml Compaines LLC | Cleveland, OK 74020 | Oil Operator | Jan 2024 |
| 460 | Latigo Oil And Gas Inc | Woodward, OK 73802-1208 | Oil & Gas Operator | Feb 2024 |
| 461 | Laverty, Thomas R | | Oil & Gas Operator | Dec 2023 |
| 462 | Lawco Exploration Inc | Bentonville, AR 72712 | Oil & Gas Operator | Feb 2024 |
| 463 | Lawco Holdings LLC | Bentonville, AR 72712 | Oil Operator | Jan 2024 |
| 464 | Lawrence Roy Drilling Co Inc | Pawnee, OK 74058-0306 | Oil & Gas Operator | Aug 2000 |
| 465 | Lawson George E | Sand Springs, OK 74063 | Oil & Gas Operator | May 2013 |
| 466 | Le Norman Energy Corporation | Duncan, OK 73534 | Oil & Gas Operator | Nov 2014 |
| 467 | Leg Up Operating Company LLC | | Oil Operator | Jan 2024 |
| 468 | Legacy Petroleum LLC | Tulsa, OK 74135 | Oil & Gas Operator | Dec 2023 |
| 469 | Lester Joan | Sand Springs, OK 74063-0430 | Oil & Gas Operator | Jan 2024 |
| 470 | Lewis A Hembree Production Co | Shawnee, OK 74802-1725 | Oil & Gas Operator | Jan 2024 |
| 471 | Lewis Energy LLC | Tulsa, OK 74159 | Oil Operator | Jan 2024 |
| 472 | Lewis Oil Corp. | Stillwater, OK 74076 | Oil & Gas Operator | Jan 2024 |
| 473 | Lewis, R. J. Oil Company | Stillwater, OK 74076 | Oil & Gas Operator | Apr 2014 |
| 474 | Lightner Harry A | Cleveland, OK 74020 | Oil & Gas Operator | May 2013 |
| 475 | Likins-Foster Honolulu Corp | Foster City, CA 94404 | Oil & Gas Operator | Feb 2015 |
| 476 | Lil-Mor Oil Company | Tulsa, OK 74105 | Oil Operator | Dec 2000 |
| 477 | Lincoln Ventures LLC | | Oil & Gas Operator | Jan 2024 |
| 478 | Link Oil Company (The) | Tulsa, OK 74103-4113 | Oil & Gas Operator | Jan 2014 |
| 479 | Little Bear Oil & Gas Co LTD | Boca Rotan, FL 33431 | Oil & Gas Operator | Jan 1997 |
| 480 | Little Chief Energy Corporation | Independence, KS 67301 | Oil Operator | Jan 2024 |
| 481 | Little River Energy Co. | Drumright, OK 74030 | Oil & Gas Operator | Jan 2024 |
| 482 | Locke Stock & Barrel Res Inc | Calgary, AB T2P3G | Oil Operator | Nov 1998 |
| 483 | Long John P Jr | Pawhuska, OK 74056 | Oil & Gas Operator | Jan 2024 |
| 484 | Long SR John | Avant, OK 74001 | Oil Operator | Jan 2024 |
| 485 | Longacre-Moore Oil Co | | Oil & Gas Operator | Jun 1996 |
| 486 | Lonnie Ware | Wynona, OK 74084 | Oil & Gas Operator | Jan 2024 |
| 487 | Louis Dreyfus Gas Marketing | Oklahoma City, OK 73134 | Oil & Gas Operator | Mar 2018 |
| 488 | LX4 LLC | | Oil Operator | Jan 2024 |
| 489 | Lynan Energy Inc | Oklahoma City, OK 73120 | Oil & Gas Operator | May 2013 |
| 490 | Lynn William R | Pawhuska, OK 74056 | Oil & Gas Operator | May 2013 |
| 491 | M & H Enterprises | Bartlesville, OK 74006-5504 | Oil & Gas Operator | Jan 2013 |
| 492 | M E Klein & Associates LLC | Washington, OK 73070-8106 | Oil & Gas Operator | Feb 2024 |
| 493 | M-S-C Corporation | Houston, TX 77027 | Oil Operator | May 1994 |
| 494 | Mac Engineering & Operating Co | | Oil & Gas Operator | May 2005 |
| 495 | Mac Laskey Kelly Oilfield | El Dorado, KS 67042 | Oil & Gas Operator | Feb 2024 |
| 496 | Maggard Supply & Oil Company | Mannford, OK 74044-1407 | Oil & Gas Operator | Nov 2014 |
| 497 | Magnolia Petroleum Inc | | Oil Operator | Jun 2018 |
| 498 | Maguire Oil Company | Dallas, TX 75270 | Oil & Gas Operator | Mar 2015 |
| 499 | Mahan Jim And Janet | Collinsville, OK 74021 | Oil & Gas Operator | Jan 2024 |
| 500 | Majoil Company | Oklahoma City, OK 73112 | Oil & Gas Operator | Dec 1996 |