| 6701 | Mac Operating | Graham, TX 76450 | Oil & Gas Operator | Jun 2023 |
| 6702 | Mace, T. A. | Oklahoma City, OK 73127 | Oil & Gas Operator | Feb 2008 |
| 6703 | Macha Enterprises, Inc. | Wichita Falls, TX 76309 | Oil Operator | Mar 2025 |
| 6704 | Machin & Associates, Inc. | Longview, TX 75606 | Oil & Gas Operator | Mar 2025 |
| 6705 | Macina, P.T. | Shamrock, TX 79079 | Gas Operator | Mar 2025 |
| 6706 | Mack Energy Co. | Duncan, OK 73534 | Oil & Gas Operator | Jan 2025 |
| 6707 | Mack Energy Corporation | Artesia, NM 88211 | Oil & Gas Operator | Jan 2025 |
| 6708 | Maclane Gas Company L.P. | Corpus Chrsti, TX 78478 | Oil & Gas Operator | Mar 1994 |
| 6709 | Maddox Operating | Jacksboro, TX 76458 | Oil & Gas Operator | Mar 2025 |
| 6710 | Maddux Oil & Gas | Strawn, TX 76475 | Oil & Gas Operator | Mar 2025 |
| 6711 | Maddux, Elizabeth H. | San Antonio, TX 78217 | Oil & Gas Operator | Nov 1995 |
| 6712 | Madera, R. F. | Palm Desert, CA 92210 | Oil & Gas Operator | Sep 2000 |
| 6713 | Madison And Wright LLC | The Colony, TX 75056 | Oil & Gas Operator | Mar 2025 |
| 6714 | Madison Oil Co.-Halbouty, M. T. | Wichita Falls, TX 76308 | Oil & Gas Operator | Dec 1998 |
| 6715 | Madison Oil Company | Wichita Falls, TX 76308 | Oil & Gas Operator | Dec 1998 |
| 6716 | Maersk Energy Inc. | Houston, TX 77042 | Oil & Gas Operator | Oct 1994 |
| 6717 | Maertins Production, LLC | Queen City, TX 75572 | Oil Operator | Mar 2025 |
| 6718 | Magellan E&P Holdings, Inc. | Houston, TX 77056 | Oil & Gas Operator | Jun 2021 |
| 6719 | Maggert Energy Corp. | Spring, TX 77387 | Gas Operator | Jun 1998 |
| 6720 | Magic Circle Energy | Oklahoma City, OK 73185 | Oil & Gas Operator | Dec 1983 |
| 6721 | Magic City Oil & Gas | Amarillo, TX 79109 | Oil & Gas Operator | Mar 2025 |
| 6722 | Magic Oil & Gas Inc. | Houston, TX 77079 | Oil & Gas Operator | Jan 2001 |
| 6723 | Magna Diversified Group, Inc. | Jacksonville, TX 75766 | Oil & Gas Operator | Oct 2013 |
| 6724 | Magna Oil & Gas Corporation | Irving, TX 75017 | Oil & Gas Operator | Feb 2016 |
| 6725 | Magna Operating, LLC | Houston, TX 77002 | Oil & Gas Operator | Mar 2025 |
| 6726 | Magnatex Corp | Midland, TX 79702-1311 | Oil & Gas Operator | Feb 1995 |
| 6727 | Magnet Oil LP | Bronte, TX 76933 | Oil & Gas Operator | Mar 2025 |
| 6728 | Magnolia Oil & Gas Operating LLC | Houston, TX 77046 | Oil & Gas Operator | Mar 2025 |
| 6729 | Magnolia Production Co | Atlanta, TX 75551 | Oil & Gas Operator | Mar 2025 |
| 6730 | Magnum Energy Inc | Norman, OK 73072-2403 | Oil & Gas Operator | Jan 2025 |
| 6731 | Magnum Engineering Company | Corpus Chrsti, TX 78401 | Oil & Gas Operator | Mar 2025 |
| 6732 | Magnum Hunter Production, Inc. | Irving, TX 75014 | Oil & Gas Operator | Dec 2019 |
| 6733 | Magnum Oil & Gas | Flower Mound, TX 75028 | Oil & Gas Operator | Jul 2000 |
| 6734 | Magnum Oilfield Services LLC | Bakersfield, CA 93309 | Oil Operator | Mar 2025 |
| 6735 | Magnum Operating, LLC | Corpus Chrsti, TX 78401 | Oil & Gas Operator | Mar 2025 |
| 6736 | Magnum Petroleum, Inc. | Palm Desert, CA 92260 | Oil & Gas Operator | Nov 2013 |
| 6737 | Magnum Producing & Operating Co. | Corpus Chrsti, TX 78471 | Oil & Gas Operator | Jan 2004 |
| 6738 | Magnum Producing, LP | Corpus Chrsti, TX 78401 | Oil & Gas Operator | Mar 2025 |
| 6739 | Magnum Production & Well Service | Iowa Park, TX 76367 | Oil & Gas Operator | Mar 2025 |
| 6740 | Magruder '81, LTD. | Midland, TX 79701 | Oil & Gas Operator | Jan 1995 |
| 6741 | Magruder, Edwin H., Jr. | Midland, TX 79701 | Oil & Gas Operator | Oct 2019 |
| 6742 | Maguire Oil Company | Dallas, TX 75270 | Oil & Gas Operator | Mar 2015 |
| 6743 | Mahfouz Energy Company | Houston, TX 77255 | Oil & Gas Operator | Nov 2020 |
| 6744 | Mahler & Scott | Ruidoso, NM 88355 | Oil & Gas Operator | Aug 2003 |
| 6745 | Mahler, Kelly Operating | Graham, TX 76450 | Oil & Gas Operator | Mar 2017 |
| 6746 | Mai Oil Operations, Inc. | Dallas, TX 75225 | Oil & Gas Operator | Nov 2024 |
| 6747 | Main Energy, Inc. | Houston, TX 77079 | Oil & Gas Operator | May 2009 |
| 6748 | Main Street Royalty, Inc. | Lockhart, TX 78644 | Oil & Gas Operator | Aug 1999 |
| 6749 | Majestic Oil & Gas, Inc. | Pampa, TX 79066 | Oil & Gas Operator | May 2007 |
| 6750 | Majestic Petroleum Corporation | Dallas, TX 75230 | Oil & Gas Operator | Oct 1996 |
| 6751 | Majestic Petroleum Services LLC | Midland, TX 79705 | Oil Operator | Mar 2025 |
| 6752 | Majestic Resources, Inc. | Dripping SPGS, TX 78620 | Oil & Gas Operator | Nov 2007 |
| 6753 | Mak-J Energy Partners(TX),LTD. | Denver, CO 80206 | Oil & Gas Operator | Sep 2013 |
| 6754 | Makar Production Company | Amarillo, TX 79118 | Oil & Gas Operator | Mar 2025 |
| 6755 | Makk Oil Production Inc. | Monahans, TX 79756 | Oil & Gas Operator | Mar 2025 |
| 6756 | Mako Exploration Management, LLC | Shreveport, LA 71105 | Oil & Gas Operator | Mar 2025 |
| 6757 | Makoil, Inc. | Lake Forest, CA 92630 | Oil & Gas Operator | Jul 2007 |
| 6758 | Maledon Enterprises | Austin, TX 78738 | Oil & Gas Operator | Feb 1996 |
| 6759 | Mallon Oil Company | Denver, CO 80202 | Oil & Gas Operator | Jun 2005 |
| 6760 | Mallory, Meredith, Jr. | San Antonio, TX 78209 | Oil & Gas Operator | Jul 2002 |
| 6761 | Malone Oil Production | La Vernia, TX 78121 | Oil & Gas Operator | Mar 2025 |
| 6762 | Malson Oil Company | Crawford, OK 73638 | Oil & Gas Operator | Dec 2016 |
| 6763 | Mamerow Energy Corp | Ganado, TX 77962 | Oil & Gas Operator | Mar 2025 |
| 6764 | Mammoth Exploration LLC | Midland, TX 79701 | Oil & Gas Operator | Jul 2023 |
| 6765 | Mammoth Operating LLC | Spicewood, TX 78669 | Oil Operator | Mar 2025 |
| 6766 | Mandarin Oil & Gas Company | Austin, TX 78714 | Oil & Gas Operator | Mar 2025 |
| 6767 | Mandujano, Alfonso & Olga | Von Ormy, TX 78073 | Oil & Gas Operator | Dec 2014 |
| 6768 | Mandujano, Alfonso, Jr. | Von Ormy, TX 78073 | Oil Operator | Mar 2025 |
| 6769 | Manhattan Petroleum, Inc. | Midland, TX 79702 | Oil & Gas Operator | Mar 2025 |
| 6770 | Manley, John D. III, Oper., Inc | Corpus Chrsti, TX 78404 | Oil & Gas Operator | Feb 2016 |
| 6771 | Manning, Jack | Odessa, TX 79760 | Oil & Gas Operator | Dec 2003 |
| 6772 | Manti Exploration Operating LLC | Corpus Chrsti, TX 78403 | Oil & Gas Operator | Feb 2015 |
| 6773 | Manti Operating Company | Covington, LA 70435 | Oil & Gas Operator | Mar 2025 |
| 6774 | Manti Tarka Permian Op, LLC | Houston, TX 77056 | Oil & Gas Operator | Mar 2025 |
| 6775 | Mantle Oil & Gas, LLC | Friendswood, TX 77546 | Oil & Gas Operator | Mar 2025 |
| 6776 | Manuel Corporation | Wichita, KS 67206 | Oil & Gas Operator | Jan 2025 |
| 6777 | Manzanita Corporation | Midland, TX 79710 | Oil & Gas Operator | Nov 2008 |
| 6778 | Manzanita Operating, LLC | Midland, TX 79702 | Oil & Gas Operator | Mar 2025 |
| 6779 | Manzano LLC | Roswell, NM 88202 | Oil & Gas Operator | Mar 2025 |
| 6780 | Manzano Oil Corporation | Roswell, NM 88202 | Oil & Gas Operator | Feb 2005 |
| 6781 | Manziel Interests | Tyler, TX 75711 | Oil & Gas Operator | Jun 2004 |
| 6782 | Manziel Management Corporation | Tyler, TX 75711 | Oil Operator | Feb 2014 |
| 6783 | Map Production Co., Inc. | Kilgore, TX 75663 | Oil & Gas Operator | Mar 2025 |
| 6784 | Maple Energy Holdings, LLC | Houston, TX 77007 | Oil & Gas Operator | Sep 2023 |
| 6785 | Mar Oil & Gas Corp. | Santa Fe, NM 87502 | Oil & Gas Operator | Jan 2025 |
| 6786 | Mar-Bec Energy Company, L.L.C. | Shreveport, LA 71105 | Oil & Gas Operator | May 2001 |
| 6787 | Maralo, Inc. | Midland, TX 79702 | Oil & Gas Operator | Dec 1998 |
| 6788 | Maralo, LLC | Midland, TX 79702 | Oil & Gas Operator | Mar 2008 |
| 6789 | Maran Oil Company | San Antonio, TX 78216 | Oil & Gas Operator | Dec 2020 |
| 6790 | Maran Oil Company, LLC | San Antonio, TX 78216 | Oil & Gas Operator | Mar 2022 |
| 6791 | Maranatha Exploration, LP | Wichita Falls, TX 76307 | Oil Operator | Feb 2012 |
| 6792 | Maranatha Oil Company | Gonzales, TX 78629 | Oil & Gas Operator | Mar 2025 |
| 6793 | Marata Oil & Gas Company | Dallas, TX 75225 | Oil & Gas Operator | Aug 2003 |
| 6794 | Marathon Oil Company | Houston, TX 77024 | Oil & Gas Operator | Jan 2025 |
| 6795 | Marathon Oil Ef LLC | Houston, TX 77252 | Oil & Gas Operator | Mar 2025 |
| 6796 | Marbil Oil, Inc. | Olney, TX 76374 | Oil & Gas Operator | Jun 2013 |
| 6797 | Marchman, J. E. | Graham, TX 76450 | Oil & Gas Operator | Jul 2009 |
| 6798 | Marco Polo Exploration, Inc. | Rosenberg, TX 77471 | Oil & Gas Operator | Dec 1993 |
| 6799 | Marcon Operating Company, Inc. | Bridgeport, TX 76426 | Oil & Gas Operator | Oct 2011 |
| 6800 | Marconi Exploration, Inc. | Houston, TX 77056 | Oil & Gas Operator | Aug 1997 |