| 3501 | Long Royalty Company | Yukon, OK 73085 | Oil & Gas Operator | Jan 2004 |
| 3502 | Long, James A | | Oil Operator | Aug 2000 |
| 3503 | Long, John P | | Oil & Gas Operator | Apr 2026 |
| 3504 | Longacre Oil & Gas | Enid, OK 73702 | Oil & Gas Operator | Mar 2013 |
| 3505 | Longberry Energy Inc | Keota, OK 74941 | Gas Operator | May 2026 |
| 3506 | Longbranch Oil Company | Oklahoma City, OK 73154-0735 | Oil & Gas Operator | Mar 2018 |
| 3507 | Longfellow Energy, LP | Dallas, TX 75225 | Oil & Gas Operator | Jul 2026 |
| 3508 | Longhorn Estates & Cattle Co. LLC | Jennings, OK 74038 | Oil Operator | Apr 2026 |
| 3509 | Longhurst Oil & Gas Inc | | Oil & Gas Operator | Nov 2013 |
| 3510 | Longview Production Company | Dallas, TX 75243-3795 | Oil & Gas Operator | Apr 2026 |
| 3511 | Lord Enterprises Inc | Oklahoma City, OK 73106-5050 | Oil & Gas Operator | Sep 2000 |
| 3512 | Lorentz Oil & Gas LLC | Edmond, OK 73034-7266 | Oil & Gas Operator | Apr 2026 |
| 3513 | Loto Energy LLC | Saint Louis, MO 63105 | Oil & Gas Operator | Apr 2026 |
| 3514 | Lou Dennis Oil Company Inc | Ada, OK 74820-2303 | Oil & Gas Operator | Jun 2016 |
| 3515 | Louisiana Land & Exploration Co. | Houston, TX 77210 | Oil & Gas Operator | Sep 2013 |
| 3516 | Lovell Keith | Stillwater, OK 74074-6459 | Oil & Gas Operator | Jan 2020 |
| 3517 | Loving Company (The) | Broken Arrow, OK 74014-0001 | Oil & Gas Operator | May 2013 |
| 3518 | Lowe Kenneth | Jennings, OK 74038 | Oil & Gas Operator | Sep 2025 |
| 3519 | Lowry Exploration Inc | Tulsa, OK 74119 | Oil & Gas Operator | Apr 2026 |
| 3520 | Loy G Boyle Dba High Energy | Ripley, OK 74062 | Oil & Gas Operator | Apr 2026 |
| 3521 | Lpadams Consulting LLC | Guthrie, OK 73044-3543 | Oil & Gas Operator | Apr 2026 |
| 3522 | LR Energy, Inc. | Dallas, TX 75206 | Oil & Gas Operator | Mar 2026 |
| 3523 | Lre Operating, LLC | Houston, TX 77002 | Oil & Gas Operator | Nov 2016 |
| 3524 | LRR IV Operating Inc | Houston, TX 77002 | Oil & Gas Operator | Apr 2026 |
| 3525 | LTJ Enterprises LLC | Lone Grove, OK 73443 | Oil & Gas Operator | Apr 2026 |
| 3526 | Lu-Ray Petroleum LLC | Oklahoma City, OK 73121-1607 | Oil & Gas Operator | May 2026 |
| 3527 | Lubell Oil Company | Tulsa, OK 74103 | Gas Operator | Jul 1993 |
| 3528 | Lucky Ace Petroleum LLC | Carrollton, TX 75010-4232 | Oil Operator | Oct 2021 |
| 3529 | Lucky Four Oil & Gas Company | Sasakwa, OK 74867 | Oil & Gas Operator | May 2026 |
| 3530 | Lucky Oil Company | Comanche, OK 73529-0009 | Oil Operator | Dec 2025 |
| 3531 | Lucre Oil Company | Muskogee, OK 74401-5099 | Oil & Gas Operator | Jun 2019 |
| 3532 | Luke Oil Company | Bristow, OK 74010 | Oil & Gas Operator | May 2026 |
| 3533 | Lunar Investments Inc | Oklahoma City, OK 73118-4823 | Oil & Gas Operator | Apr 2026 |
| 3534 | Luther Oil Inc | Cameron Park, CA 95682-8865 | Oil & Gas Operator | Apr 2020 |
| 3535 | Luween Energy LLC | Oklahoma City, OK 73128 | Oil & Gas Operator | Apr 2026 |
| 3536 | Lvi Enterprises Trust | Plano, TX 75093-7789 | Oil & Gas Operator | Nov 2014 |
| 3537 | LVM Oil Production LLC | Yale, OK 74085-6688 | Oil & Gas Operator | Jul 2021 |
| 3538 | LX4, LLC | Gage, OK 73843 | Oil Operator | May 2026 |
| 3539 | LXS Inc | Stigler, OK 74462-0506 | Gas Operator | Nov 2013 |
| 3540 | Lyda Gerald SR X Bar Ranch | San Antonio, TX 78268-0907 | Oil & Gas Operator | Feb 1994 |
| 3541 | Lynan Energy Inc | Oklahoma City, OK 73120 | Oil & Gas Operator | May 2013 |
| 3542 | Lynn William R | Pawhuska, OK 74056 | Oil & Gas Operator | May 2013 |
| 3543 | Lynx Energy Company, Inc. | Dallas, TX 75201 | Oil & Gas Operator | Mar 2008 |
| 3544 | Lynx Oklahoma Operating LLC | Oklahoma City, OK 73116 | Oil & Gas Operator | Apr 2026 |
| 3545 | Lynx Operating Co., Inc. | Dallas, TX 75206 | Oil & Gas Operator | Jul 2026 |
| 3546 | Lyon Energy, Inc. | Plano, TX 75075 | Oil & Gas Operator | Feb 2000 |
| 3547 | Lyon Hoyle | Sasakwa, OK 74867 | Oil Operator | Jan 2026 |
| 3548 | Lyons & Lyons Inc | Tulsa, OK 74119 | Oil & Gas Operator | Apr 2026 |
| 3549 | Lyric Energy, Inc. | Amarillo, TX 79105 | Oil & Gas Operator | Mar 1996 |
| 3550 | M & D Oil & Gas | Levelland, TX 79336 | Oil & Gas Operator | Aug 2000 |
| 3551 | M & D Pumping Service Inc | Ringwood, OK 73768-3415 | Oil & Gas Operator | May 2026 |
| 3552 | M & H Enterprises | Bartlesville, OK 74006-5504 | Oil & Gas Operator | Jan 2013 |
| 3553 | M & M Exploration Inc | Westminster, CO 80031 | Oil & Gas Operator | May 2026 |
| 3554 | M & M Petroleum Company | Mannford, OK 74044-0462 | Oil Operator | Apr 2020 |
| 3555 | M & M Resources Inc | Oklahoma City, OK 73156 | Oil & Gas Operator | Sep 2018 |
| 3556 | M & S Oil Co | Lawrenceburg, IN 47025-8675 | Oil & Gas Operator | Aug 2000 |
| 3557 | M & S Operating LLC | Oklahoma City, OK 73112 | Oil Operator | Mar 1999 |
| 3558 | M & T Oil Company | Copan, OK 74022 | Oil Operator | Dec 2025 |
| 3559 | M & T Production Company LLC | Tulsa, OK 74132-3742 | Oil Operator | Apr 2011 |
| 3560 | M And V Resources Inc | Crescent, OK 73028 | Oil & Gas Operator | May 2026 |
| 3561 | M E Booth Corporation | Ada, OK 74820 | Oil Operator | Apr 2026 |
| 3562 | M E Klein & Associates LLC | Washington, OK 73093-4663 | Oil & Gas Operator | May 2026 |
| 3563 | M G Energy LLC | Cushing, OK 74023 | Oil & Gas Operator | Apr 2026 |
| 3564 | M H Oil & Gas LLC | Okeene, OK 73763-0684 | Oil & Gas Operator | Feb 2013 |
| 3565 | M J M D Inc | Burlington, IA 52601 | Oil Operator | Jan 2013 |
| 3566 | M K W Inc | Oklahoma City, OK 73112-8884 | Oil & Gas Operator | Dec 2009 |
| 3567 | M M Energy Inc | Oklahoma City, OK 73156 | Oil & Gas Operator | Apr 2026 |
| 3568 | M T W Oil Co | Terral, OK 73569 | Oil Operator | Jun 2014 |
| 3569 | M&D Energy LLC | Moore, OK 73160 | Oil Operator | Apr 2026 |
| 3570 | M-B Operating Co., Inc. | Rowlett, TX 75030 | Oil & Gas Operator | Jul 2026 |
| 3571 | M-B SWD Inc | Crescent, OK 73028-0533 | Oil Operator | Jul 1997 |
| 3572 | M-P Petroleum Inc | McPherson, KS 67460 | Oil & Gas Operator | Jan 2013 |
| 3573 | M-S-C Corporation | Houston, TX 77027 | Oil Operator | May 1994 |
| 3574 | M. M. & M. Resources, Inc. | Oklahoma City, OK 73120 | Oil & Gas Operator | Apr 2020 |
| 3575 | M. S. Productions, Inc. | Pittsburg, KS 66762 | Oil & Gas Operator | Nov 2019 |
| 3576 | M3V Energy, LLC | Perryton, TX 79070 | Oil & Gas Operator | Jul 2026 |
| 3577 | Mac Engineering & Operating Co | | Oil & Gas Operator | May 2005 |
| 3578 | Mach Petroleum, Inc. | Tulsa, OK 74153 | Oil & Gas Operator | Nov 2014 |
| 3579 | Mack Energy Co. | Duncan, OK 73534 | Oil & Gas Operator | May 2026 |
| 3580 | Mack Oil Company | Duncan, OK 73534 | Oil & Gas Operator | Nov 2000 |
| 3581 | Mackellar Inc | Oklahoma City, OK 73116-7101 | Oil & Gas Operator | May 2026 |
| 3582 | Mackey Consulting & Leasing LLC | Cleveland, OK 74020 | Oil & Gas Operator | Mar 2026 |
| 3583 | Macmart Inc | Wynnewood, OK 73098 | Oil & Gas Operator | Jan 2016 |
| 3584 | Macro Oil Company | Bartlesville, OK 74006 | Oil Operator | Aug 1999 |
| 3585 | Madcap Resources, LLC | Edmond, OK 73013 | Gas Operator | Apr 2026 |
| 3586 | Magaw & Zimmer | Perry, OK 73077-1055 | Oil & Gas Operator | Aug 2013 |
| 3587 | Magellan Exploration Co LTD | Bethany, OK 73008-0909 | Oil & Gas Operator | Jun 2014 |
| 3588 | Maggard Joe | Mannford, OK 74044 | Oil & Gas Operator | May 2023 |
| 3589 | Maggard Oil Co Inc | Manford, OK 74044 | Oil & Gas Operator | Sep 1997 |
| 3590 | Maggard Supply & Oil Company | Mannford, OK 74044-1407 | Oil & Gas Operator | Nov 2014 |
| 3591 | Maggard VIrginia J | Mannford, OK 74044-3027 | Oil Operator | Apr 2026 |
| 3592 | Magic Investments LLC | Edmond, OK 73013 | Oil & Gas Operator | Mar 2026 |
| 3593 | Magma Resources LLC | Paoli, OK 73074 | Oil & Gas Operator | Apr 2025 |
| 3594 | Magnatex Corp | Midland, TX 79702-1311 | Oil & Gas Operator | Feb 1995 |
| 3595 | Magnolia Petroleum Inc | Tulsa, OK 74106-2433 | Oil Operator | Jun 2018 |
| 3596 | Magnum Energy Inc | Norman, OK 73072-2403 | Oil & Gas Operator | May 2026 |
| 3597 | Magnum Petroleum, Inc. | Palm Desert, CA 92260 | Oil & Gas Operator | Nov 2013 |
| 3598 | Maguire James Q Inc | Norman, OK 73070-1748 | Oil & Gas Operator | Mar 2026 |
| 3599 | Maguire Oil Company | Dallas, TX 75270 | Oil & Gas Operator | Mar 2015 |
| 3600 | Mahan, Janet L | | Oil & Gas Operator | Apr 2026 |