| 3701 | Marion Corporation | | Oil & Gas Operator | Jan 2001 |
| 3702 | Marion Energy Inc | Houston, TX 770082292 | Oil & Gas Operator | May 2015 |
| 3703 | Marjo Oil Company | Lockhart, TX 78644 | Oil & Gas Operator | Oct 1999 |
| 3704 | Marjo Operating Company Inc | Tulsa, OK 741010729 | Oil & Gas Operator | Oct 2025 |
| 3705 | Marjo Operating Mid-Continent LLC | Tulsa, OK 74103 | Oil & Gas Operator | Nov 2025 |
| 3706 | Mark A Meier Dba MSC Oil And Gas Co | Oklahoma City, OK 73105 | Oil & Gas Operator | Sep 2025 |
| 3707 | Mark Holloway Inc | Oklahoma City, OK 73107-6526 | Oil & Gas Operator | Oct 2025 |
| 3708 | Mark L Shidler Inc | Houston, TX 77055 | Oil & Gas Operator | Nov 2025 |
| 3709 | Mark Petroleum Inc | Tulsa, OK 74136 | Oil & Gas Operator | Sep 2018 |
| 3710 | Markley Exploration | Bixby, OK 74008-5332 | Oil & Gas Operator | Jan 2014 |
| 3711 | Markley L C Corporation | Fletcher, OK 73541 | Oil & Gas Operator | Aug 2002 |
| 3712 | Marler Philip | Purcell, OK 73080-1522 | Oil & Gas Operator | Nov 2016 |
| 3713 | Marlin Oil Corporation | Oklahoma City, OK 73113 | Oil & Gas Operator | Oct 2025 |
| 3714 | Marlin, Bruce W | | Oil Operator | Oct 2025 |
| 3715 | Marlow Environmental LLC | Marlow, OK 73055 | Oil Operator | May 2022 |
| 3716 | Marmac Resources Company | | Oil & Gas Operator | Mar 2015 |
| 3717 | Marmac Resources Inc | | Oil Operator | Nov 1998 |
| 3718 | Marmik Oil Company | El Dorado, AR 71730 | Oil & Gas Operator | Jan 2015 |
| 3719 | Marple Petroleum LLC | Edmond, OK 73013 | Oil Operator | Nov 2025 |
| 3720 | Marquise Oil Properties Inc | Konawa, OK 74849 | Oil & Gas Operator | Nov 1992 |
| 3721 | Marrakesh Oil Company | Oklahoma City, OK 73118 | Oil & Gas Operator | Jun 1995 |
| 3722 | Marrs Bros Oil Co Inc | Drumright, OK 74030 | Oil Operator | Sep 1994 |
| 3723 | Marsh Lonnie C | Konawa, OK 74849 | Oil & Gas Operator | Sep 2025 |
| 3724 | Marsh Oil & Gas Company | Oklahoma City, OK 73118 | Oil & Gas Operator | Oct 2025 |
| 3725 | Marsh Operating Company | Dallas, TX 75221 | Oil & Gas Operator | Sep 2025 |
| 3726 | Marshall Oil Corporation | Oklahoma City, OK 73154 | Oil & Gas Operator | Apr 2017 |
| 3727 | Martin Billy G | Okmulgee, OK 74447 | Oil & Gas Operator | May 2013 |
| 3728 | Martin Burt K | Henryetta, OK 74437 | Oil & Gas Operator | Jul 2008 |
| 3729 | Martin Family Living Revocable Trust | Konawa, OK 74849-2221 | Oil Operator | Jul 2025 |
| 3730 | Martin John R | Cushing, OK 74023 | Oil & Gas Operator | Apr 1995 |
| 3731 | Martin Jr, James U | | Oil & Gas Operator | Oct 2025 |
| 3732 | Martin Oil & Gas | Freer, TX 78357 | Oil & Gas Operator | Oct 2025 |
| 3733 | Martin Oil Co. | Aspermont, TX 79502 | Oil & Gas Operator | Jul 2023 |
| 3734 | Martin Production Corporation | Graham, TX 76450 | Oil Operator | Nov 2025 |
| 3735 | Martin Tank Truck & Casing Pulling Inc | Cushing, OK 74023 | Oil & Gas Operator | Apr 2015 |
| 3736 | Martin'S Resources LLC | Woodward, OK 73801-5641 | Oil & Gas Operator | Oct 2025 |
| 3737 | Marvel Joseph Shawn | Haskell, OK 74436 | Oil Operator | Oct 2025 |
| 3738 | Marymac Company | Dallas, TX 75219-2362 | Oil & Gas Operator | Mar 2015 |
| 3739 | Masa Energy LLC | Houston, TX 77094 | Oil & Gas Operator | Dec 2025 |
| 3740 | Masada Oil & Gas | Quanah, TX 79252 | Oil & Gas Operator | Dec 2025 |
| 3741 | Masham Production Corporation | Enid, OK 73702 | Oil & Gas Operator | Aug 2000 |
| 3742 | Mason Oil Company Inc | Nowata, OK 74048 | Oil Operator | Oct 2007 |
| 3743 | Mason Oil Inc | Blanchard, OK 73010-2903 | Oil & Gas Operator | Feb 2009 |
| 3744 | Mason Robert A | | Oil Operator | May 1993 |
| 3745 | Mason Robert A Production Co | Edmond, OK 73013-9102 | Oil & Gas Operator | May 2013 |
| 3746 | Mason, Tommy L | | Oil & Gas Operator | May 2013 |
| 3747 | Massad George H Estate | Holdenville, OK 74848 | Oil & Gas Operator | Dec 2014 |
| 3748 | Massad John M | Holdenville, OK 74848-2629 | Oil & Gas Operator | Oct 2017 |
| 3749 | Massad Oil Company | Holdenville, OK 74848-2629 | Oil Operator | Oct 2025 |
| 3750 | Masters Dorothy V | Davis, OK 73030-0397 | Oil & Gas Operator | May 2020 |
| 3751 | Masters Loy C | Davis, OK 73030-0397 | Oil & Gas Operator | Apr 2005 |
| 3752 | Matador E & P Company Inc | | Oil & Gas Operator | May 2020 |
| 3753 | Matherly Elaine | Bristow, OK 74010-9536 | Oil Operator | Mar 2015 |
| 3754 | Mathews & Casselman Oil Inc | Morris, OK 74445 | Oil & Gas Operator | Dec 2021 |
| 3755 | Mathews Billy J | Morris, OK 74445-4826 | Oil & Gas Operator | Aug 2025 |
| 3756 | Mathews Exploration Corporation | Oklahoma City, OK 73155-5328 | Oil & Gas Operator | Mar 2015 |
| 3757 | Mathews Roger Dba Mathews Oil/Trans Energy | Kellyville, OK 74039 | Oil Operator | Oct 2025 |
| 3758 | Matna Enterprises LLC | Maud, OK 74854-2812 | Oil & Gas Operator | Aug 2025 |
| 3759 | Mator LLC | Hennessey, OK 73742-1235 | Oil & Gas Operator | Nov 2025 |
| 3760 | Matoush Wade E | | Oil & Gas Operator | Mar 2014 |
| 3761 | Mattea Oil & Gas LLC | Drumright, OK 74023 | Oil & Gas Operator | Jun 2025 |
| 3762 | Matthews Florine D | Bristow, OK 74010 | Oil & Gas Operator | Jan 2020 |
| 3763 | Matthews Kenneth (Butch) | Konawa, OK 74849-0310 | Oil Operator | Sep 2025 |
| 3764 | Matthews Oil & Gas | Ada, OK 74820 | Oil & Gas Operator | Nov 2025 |
| 3765 | Matthews Oil & Gas LLC | Weleetka, OK 74880-7312 | Oil & Gas Operator | Apr 2020 |
| 3766 | Maverick Brothers Resources LLC | Enid, OK 73701 | Oil & Gas Operator | Sep 2025 |
| 3767 | Maverick Drilling Co., Inc. | Austin, TX 78729 | Oil & Gas Operator | Mar 2015 |
| 3768 | Maverick Oil Co. | Richland, TX 76681 | Oil Operator | Dec 2025 |
| 3769 | Max Oil Company | Blackwell, OK 74631 | Oil & Gas Operator | Apr 2024 |
| 3770 | Maxim Energy Corporation | Baytown, TX 77520 | Oil & Gas Operator | Nov 2025 |
| 3771 | Maxine Oil Company | Muskogee, OK 74401-0512 | Oil & Gas Operator | Sep 2014 |
| 3772 | Maxland Oil Company | Haslet, TX 76052-5137 | Oil Operator | Nov 2014 |
| 3773 | Maxwell Resources Corporation | Oklahoma City, OK 73159 | Oil & Gas Operator | Apr 2009 |
| 3774 | May Energy Company | Stroud, OK 74079 | Oil & Gas Operator | May 2013 |
| 3775 | May Petroleum Inc | Dallas, TX 75231 | Oil & Gas Operator | Nov 1998 |
| 3776 | Mayabb Oil Company Inc | Tulsa, OK 74105-5158 | Oil & Gas Operator | Oct 2025 |
| 3777 | Mayes Donald W & Associates | Piedmont, OK 73078-0051 | Oil & Gas Operator | Dec 1996 |
| 3778 | Mayfield Engineering Service | Tulsa, OK 74104 | Oil & Gas Operator | Dec 2025 |
| 3779 | Mayfield SWD LLC | McKinney, TX 75070-5020 | Oil Operator | Aug 2021 |
| 3780 | Mayhar N D | Eufaula, OK 74432 | Oil Operator | Apr 2015 |
| 3781 | Mayo Ross L Inc | Oklahoma City, OK 73120-1426 | Oil & Gas Operator | Jan 1997 |
| 3782 | MBR Resources, Inc. | Tulsa, OK 74119 | Oil & Gas Operator | Dec 2025 |
| 3783 | McAninch J W | Tonkawa, OK 74653 | Oil & Gas Operator | Nov 2000 |
| 3784 | McAninch Michael E | Tonkawa, OK 74653-4415 | Oil & Gas Operator | May 2013 |
| 3785 | McAninch W Kent | Tonkawa, OK 74653-4216 | Oil & Gas Operator | Oct 2016 |
| 3786 | McCabe Oil And Gas LLC / Osage Only | | Oil Operator | Oct 2025 |
| 3787 | McCabe, William G | | Oil & Gas Operator | Aug 2013 |
| 3788 | McCann Resources Inc | | Oil & Gas Operator | Oct 2025 |
| 3789 | McCart Sue | Okmulgee, OK 74447 | Oil & Gas Operator | Nov 2024 |
| 3790 | McChesney Michael & Ayo Joseph R | Pinedale, WY 82941-1282 | Oil Operator | Nov 2019 |
| 3791 | McCleese Enterprises LLC | Richardson, TX 75082-4839 | Gas Operator | Dec 2017 |
| 3792 | McClintock V C | Casper, WY 82601 | Oil & Gas Operator | May 2024 |
| 3793 | McClintock, Robert T | | Oil & Gas Operator | Oct 2025 |
| 3794 | McCool John E | Youngsville, PA 16371 | Oil & Gas Operator | Nov 2025 |
| 3795 | McCord Al Inc | Norman, OK 73072-6720 | Oil & Gas Operator | Feb 2011 |
| 3796 | McCord J K | Duncan, OK 73534-0032 | Oil Operator | Mar 2009 |
| 3797 | McCorgary Martin E | Arkansas City, KS 67005-5452 | Oil & Gas Operator | Sep 2025 |
| 3798 | McCoy Alex W & Associates | Tulsa, OK 74170 | Oil & Gas Operator | Mar 2009 |
| 3799 | McCoy Petroleum Corporation | Wichita, KS 67207 | Oil & Gas Operator | Nov 2025 |
| 3800 | McCraw Family Limited Partnership (The) | Konawa, OK 74849-5616 | Oil & Gas Operator | Aug 2025 |