| 3701 | Maverick Drilling Co., Inc. | Austin, TX 78729 | Oil & Gas Operator | Mar 2015 |
| 3702 | Maverick Oil Co. | Richland, TX 76681 | Oil Operator | Jul 2026 |
| 3703 | Max Oil Company | Blackwell, OK 74631 | Oil & Gas Operator | Apr 2024 |
| 3704 | Maxim Energy Corporation | Baytown, TX 77520 | Oil & Gas Operator | Apr 2026 |
| 3705 | Maxine Oil Company | Muskogee, OK 74401-0512 | Oil & Gas Operator | Sep 2014 |
| 3706 | Maxland Oil Company | Haslet, TX 76052-5137 | Oil Operator | Nov 2014 |
| 3707 | Maxwell Resources Corporation | Oklahoma City, OK 73159 | Oil & Gas Operator | Apr 2009 |
| 3708 | May Energy Company | Stroud, OK 74079 | Oil & Gas Operator | May 2013 |
| 3709 | May Petroleum Inc | Dallas, TX 75231 | Oil & Gas Operator | Nov 1998 |
| 3710 | Mayabb Oil Company Inc | Tulsa, OK 74105-5158 | Oil & Gas Operator | Oct 2025 |
| 3711 | Mayes Donald W & Associates | Piedmont, OK 73078-0051 | Oil & Gas Operator | Dec 1996 |
| 3712 | Mayfield Engineering Service | Tulsa, OK 74104 | Oil & Gas Operator | Jul 2026 |
| 3713 | Mayfield SWD LLC | McKinney, TX 75070-5020 | Oil Operator | Aug 2021 |
| 3714 | Mayhar N D | Eufaula, OK 74432 | Oil Operator | Apr 2015 |
| 3715 | Mayo Ross L Inc | Oklahoma City, OK 73120-1426 | Oil & Gas Operator | Jan 1997 |
| 3716 | MBR Resources, Inc. | Tulsa, OK 74119 | Oil & Gas Operator | Jul 2026 |
| 3717 | McAninch J W | Tonkawa, OK 74653 | Oil & Gas Operator | Nov 2000 |
| 3718 | McAninch Michael E | Tonkawa, OK 74653-4415 | Oil & Gas Operator | May 2013 |
| 3719 | McAninch W Kent | Tonkawa, OK 74653-4216 | Oil & Gas Operator | Oct 2016 |
| 3720 | McCabe Oil And Gas LLC / Osage Only | | Oil Operator | Apr 2026 |
| 3721 | McCabe, William G | | Oil & Gas Operator | Aug 2013 |
| 3722 | McCann Resources Inc | | Oil & Gas Operator | Apr 2026 |
| 3723 | McCart Sue | Okmulgee, OK 74447 | Oil & Gas Operator | Nov 2024 |
| 3724 | McChesney Michael & Ayo Joseph R | Pinedale, WY 82941-1282 | Oil Operator | Nov 2019 |
| 3725 | McCleese Enterprises LLC | Richardson, TX 75082-4839 | Gas Operator | Dec 2017 |
| 3726 | McClintock V C | Casper, WY 82601 | Oil & Gas Operator | May 2024 |
| 3727 | McClintock, Robert T | | Oil & Gas Operator | Apr 2026 |
| 3728 | McCool John E | Youngsville, PA 16371 | Oil & Gas Operator | Apr 2026 |
| 3729 | McCord Al Inc | Norman, OK 73072-6720 | Oil & Gas Operator | Feb 2011 |
| 3730 | McCord J K | Duncan, OK 73534-0032 | Oil Operator | Mar 2009 |
| 3731 | McCorgary Martin E | Arkansas City, KS 67005-5452 | Oil & Gas Operator | Apr 2026 |
| 3732 | McCoy Alex W & Associates | Tulsa, OK 74170 | Oil & Gas Operator | Mar 2009 |
| 3733 | McCoy Petroleum Corporation | Wichita, KS 67207 | Oil & Gas Operator | May 2026 |
| 3734 | McCraw Family Limited Partnership (The) | Konawa, OK 74849-5616 | Oil & Gas Operator | Feb 2026 |
| 3735 | McCullough G W | Norman, OK 73072 | Oil & Gas Operator | Aug 2000 |
| 3736 | McCutchin Alma Estate | Dallas, TX 75380 | Oil & Gas Operator | May 2013 |
| 3737 | McDe Energy Company Inc | Enid, OK 73706 | Oil & Gas Operator | May 2009 |
| 3738 | McElroy John | Sapulpa, OK 74066-6119 | Oil & Gas Operator | Apr 2026 |
| 3739 | McEna Inc | Tulsa, OK 74135 | Oil & Gas Operator | Jul 2005 |
| 3740 | McFerran Operating LLC | Seminole, OK 74868-6202 | Oil & Gas Operator | May 2026 |
| 3741 | McGee, Tom Corporation | Booker, TX 79005 | Oil & Gas Operator | Apr 2026 |
| 3742 | McGhee Exploration And Prod. Co. | Houston, TX 77019 | Oil & Gas Operator | Feb 2003 |
| 3743 | McGinley Jr, John R | | Gas Operator | Nov 1998 |
| 3744 | McGinley P A | Tulsa, OK 74101 | Oil & Gas Operator | Dec 1996 |
| 3745 | McGinness Energy Company Inc | Wichita, KS 67206 | Oil & Gas Operator | Apr 2026 |
| 3746 | McGoldrick Oil Company | Shreveport, LA 71129 | Oil & Gas Operator | Jul 2020 |
| 3747 | McGonigal Dan L | Skiatook, OK 74070 | Oil & Gas Operator | Sep 2024 |
| 3748 | McGonigal Donald T | Tulsa, OK 74114-2145 | Oil & Gas Operator | Jul 2004 |
| 3749 | McGonigal Ted W | Norman, OK 73072 | Oil & Gas Operator | Mar 2026 |
| 3750 | McGriff Craig Exploration Inc | Oklahoma City, OK 73172-0364 | Oil & Gas Operator | Mar 2023 |
| 3751 | McGuire Tom Oil Company | Depew, OK 74028 | Oil Operator | Apr 2011 |
| 3752 | McIntyre M L | Oklahoma City, OK 73154-0523 | Oil & Gas Operator | Jul 1996 |
| 3753 | McKay Oil Company | Perry, OK 73077 | Oil Operator | Nov 2008 |
| 3754 | McKee Energy Comapny Inc | | Oil & Gas Operator | Apr 2011 |
| 3755 | McKenzie Petroleum Company | Houston, TX 77063 | Oil & Gas Operator | Aug 1995 |
| 3756 | McKinney Kenneth R | Okmulgee, OK 74447-6932 | Oil Operator | Aug 2000 |
| 3757 | McKinney Operating Company | Canadian, TX 79014 | Gas Operator | May 2002 |
| 3758 | MCM Energy Inc | Edmond, OK 73013-8035 | Oil & Gas Operator | Nov 2021 |
| 3759 | McMahon Operating Co., L.C. | Pampa, TX 79066 | Oil & Gas Operator | Dec 2004 |
| 3760 | McMillin C C & Company Inc | Guthrie, OK 73044 | Oil & Gas Operator | Apr 2026 |
| 3761 | McMurtrie Oil Inc | | Oil & Gas Operator | Apr 2026 |
| 3762 | McNeal Production Inc | Perry, OK 73077-0268 | Oil & Gas Operator | Nov 2014 |
| 3763 | McNeill Randy & W R | Okmulgee, OK 74447 | Oil & Gas Operator | Nov 2013 |
| 3764 | McNic Oil & Gas Midcontinent | Oklahoma City, OK 73154-0526 | Oil & Gas Operator | May 2024 |
| 3765 | McNutt P L | San Marcos, CA 92069-4817 | Oil & Gas Operator | Jul 1994 |
| 3766 | McO Resources Integrated Corp | Houston, TX 77057 | Oil Operator | Jan 1997 |
| 3767 | McOil Operating Company LLC | Muskogee, OK 74401 | Oil & Gas Operator | Apr 2026 |
| 3768 | McOr Oil & Gas Corp | Houston, TX 77002 | Oil & Gas Operator | Oct 2013 |
| 3769 | McQueen Ed & Company Inc | Lindsey, OK 73052 | Oil & Gas Operator | Apr 2014 |
| 3770 | McRae & Henry LTD | Golden, CO 80401 | Oil & Gas Operator | May 2022 |
| 3771 | Meade Energy Corporation | Oklahoma City, OK 73118-4015 | Oil & Gas Operator | Apr 2026 |
| 3772 | Meade James C | Oklahoma City, OK 73118-1544 | Gas Operator | Apr 2015 |
| 3773 | Meador Hubbell Meador Inc | Beggs, OK 74421-0794 | Oil & Gas Operator | Apr 2020 |
| 3774 | Meador Oil Company Inc | Lubbock, TX 79415 | Oil & Gas Operator | Oct 2022 |
| 3775 | Meadors Jr J W Trust | Bixby, OK 74008-0151 | Oil & Gas Operator | Aug 2013 |
| 3776 | Meadors Operating Co | Jennings, OK 74038-0233 | Oil Operator | Apr 2026 |
| 3777 | Meadowbrook Oil Corporation Of Ok Inc | Del City, OK 73115-3608 | Oil & Gas Operator | May 2026 |
| 3778 | Meadowlark Operating Co | | Oil & Gas Operator | Apr 2026 |
| 3779 | Mecom Energy Corporation | Houston, TX 77030 | Oil & Gas Operator | Jan 1999 |
| 3780 | Medallion Energy Inc | Norman, OK 73072-7436 | Oil & Gas Operator | Aug 2004 |
| 3781 | Medallion Petroleum, Inc. | Tulsa, OK 74103 | Oil & Gas Operator | Jan 2015 |
| 3782 | Medders Oil Company | Wichita Falls, TX 76308 | Oil & Gas Operator | Jul 2026 |
| 3783 | Medicine Bow Operating Company | Houston, TX 77002 | Oil & Gas Operator | Apr 2014 |
| 3784 | Mega Natural Gas Co | Tulsa, OK 74133 | Oil & Gas Operator | Jul 1996 |
| 3785 | Mega Resources Inc | Dallas, TX 75225-0186 | Oil & Gas Operator | Jan 2001 |
| 3786 | Megaenergy Operating, Inc. | Edmond, OK 73034 | Oil & Gas Operator | Jul 2015 |
| 3787 | Megargel Drilling Company | Megargel, TX 76370 | Oil Operator | Nov 1998 |
| 3788 | Mel Cox Transports Inc | Comanche, OK 73529-7640 | Oil & Gas Operator | Jul 2022 |
| 3789 | Mel-Ray Oil Company | Nowata, OK 74048-0149 | Oil & Gas Operator | Mar 2004 |
| 3790 | Melson Oil & Gas Inc | Broken Arrow, OK 74014 | Oil & Gas Operator | Apr 2026 |
| 3791 | Melzer Exploration Company | Midland, TX 79702-2083 | Oil & Gas Operator | May 2013 |
| 3792 | Mendell Petroleum Corporation | Castle Rock, CO 80104-9045 | Oil & Gas Operator | Sep 2004 |
| 3793 | Mep Operating LLC | Houston, TX 77056-2733 | Oil & Gas Operator | Aug 2025 |
| 3794 | Mer Resources Inc | Edmond, OK 73013-7662 | Oil & Gas Operator | Mar 2015 |
| 3795 | Mer-Bar Exploration Co Inc | Oklahoma City, OK 73118 | Oil & Gas Operator | Oct 1992 |
| 3796 | Mercer Oil And Gas Co Inc | Norman, OK 73070 | Oil & Gas Operator | Apr 2015 |
| 3797 | Mercer Pet Management Inc | Edmond, OK 73013-6677 | Oil & Gas Operator | Jan 2011 |
| 3798 | Merelco Inc | Seminole, OK 74868 | Oil Operator | Jun 2014 |
| 3799 | Merex Resources, Inc. | Amarillo, TX 79159 | Oil & Gas Operator | Sep 2019 |
| 3800 | Meridian Exploration Inc | Oklahoma City, OK 73128 | Oil & Gas Operator | Aug 2013 |