| 6701 | M-W-D Oil Co. | Odessa, TX 79760 | Oil & Gas Operator | Jul 1999 |
| 6702 | M. E. Operating & Services, Inc. | Fort Worth, TX 76104 | Oil & Gas Operator | Apr 2025 |
| 6703 | M. Grace, Inc. | Henderson, TX 75653 | Oil & Gas Operator | Apr 2025 |
| 6704 | M. J. G., Inc. | Alice, TX 78333 | Oil & Gas Operator | Jul 2010 |
| 6705 | M. K. Production | Caldwell, TX 77836 | Oil & Gas Operator | Mar 2008 |
| 6706 | M. P. S. Prod. Co. | Houston, TX 77225 | Oil & Gas Operator | Dec 1996 |
| 6707 | M. S. Productions, Inc. | Pittsburg, KS 66762 | Oil & Gas Operator | Nov 2019 |
| 6708 | M.A.R.S. Energy | Midland, TX 79705 | Oil & Gas Operator | Apr 2025 |
| 6709 | M.B. Properties, Inc. | Dallas, TX 75231 | Oil & Gas Operator | Oct 1995 |
| 6710 | M.B.J. Operating | Argyle, TX 76226 | Oil & Gas Operator | Jun 2022 |
| 6711 | M.D. Skroopka Operating, LLC | Oakland, CA 94611 | Oil & Gas Operator | Apr 2025 |
| 6712 | M.J.O.G., Inc. | Fort Smith, AR 72903 | Oil Operator | Mar 2015 |
| 6713 | M.R.M. Operating, Inc. | Midland, TX 79707 | Oil & Gas Operator | Aug 2003 |
| 6714 | M2 Squared Operating, LLC | Cisco, TX 76437 | Oil Operator | Apr 2025 |
| 6715 | M3V Energy, LLC | Perryton, TX 79070 | Oil & Gas Operator | Apr 2025 |
| 6716 | M5 Standing Energy, LLC | Decatur, TX 76234 | Oil & Gas Operator | Apr 2025 |
| 6717 | M5oexit, LLC | Pampa, TX 79066 | Oil & Gas Operator | Apr 2025 |
| 6718 | Mac 5 Operating, LLC | Pampa, TX 79065 | Oil & Gas Operator | Feb 2021 |
| 6719 | Mac Operating | Graham, TX 76450 | Oil & Gas Operator | Jun 2023 |
| 6720 | Mace, T. A. | Oklahoma City, OK 73127 | Oil & Gas Operator | Feb 2008 |
| 6721 | Macha Enterprises, Inc. | Wichita Falls, TX 76309 | Oil Operator | Apr 2025 |
| 6722 | Machin & Associates, Inc. | Longview, TX 75606 | Oil & Gas Operator | Apr 2025 |
| 6723 | Macina, P.T. | Shamrock, TX 79079 | Gas Operator | Apr 2025 |
| 6724 | Mack Energy Co. | Duncan, OK 73534 | Oil & Gas Operator | Feb 2025 |
| 6725 | Mack Energy Corporation | Artesia, NM 88211 | Oil & Gas Operator | Feb 2025 |
| 6726 | Maclane Gas Company L.P. | Corpus Chrsti, TX 78478 | Oil & Gas Operator | Mar 1994 |
| 6727 | Maddox Operating | Jacksboro, TX 76458 | Oil & Gas Operator | Apr 2025 |
| 6728 | Maddux Oil & Gas | Strawn, TX 76475 | Oil & Gas Operator | Apr 2025 |
| 6729 | Maddux, Elizabeth H. | San Antonio, TX 78217 | Oil & Gas Operator | Nov 1995 |
| 6730 | Madera, R. F. | Palm Desert, CA 92210 | Oil & Gas Operator | Sep 2000 |
| 6731 | Madison And Wright LLC | The Colony, TX 75056 | Oil & Gas Operator | Apr 2025 |
| 6732 | Madison Oil Co.-Halbouty, M. T. | Wichita Falls, TX 76308 | Oil & Gas Operator | Dec 1998 |
| 6733 | Madison Oil Company | Wichita Falls, TX 76308 | Oil & Gas Operator | Dec 1998 |
| 6734 | Maersk Energy Inc. | Houston, TX 77042 | Oil & Gas Operator | Oct 1994 |
| 6735 | Maertins Production, LLC | Queen City, TX 75572 | Oil Operator | Apr 2025 |
| 6736 | Magellan E&P Holdings, Inc. | Houston, TX 77056 | Oil & Gas Operator | Jun 2021 |
| 6737 | Maggert Energy Corp. | Spring, TX 77387 | Gas Operator | Jun 1998 |
| 6738 | Magic Circle Energy | Oklahoma City, OK 73185 | Oil & Gas Operator | Dec 1983 |
| 6739 | Magic City Oil & Gas | Amarillo, TX 79109 | Oil & Gas Operator | Apr 2025 |
| 6740 | Magic Oil & Gas Inc. | Houston, TX 77079 | Oil & Gas Operator | Jan 2001 |
| 6741 | Magna Diversified Group, Inc. | Jacksonville, TX 75766 | Oil & Gas Operator | Oct 2013 |
| 6742 | Magna Oil & Gas Corporation | Irving, TX 75017 | Oil & Gas Operator | Feb 2016 |
| 6743 | Magna Operating, LLC | Houston, TX 77002 | Oil & Gas Operator | Apr 2025 |
| 6744 | Magnatex Corp | Midland, TX 79702-1311 | Oil & Gas Operator | Feb 1995 |
| 6745 | Magnet Oil LP | Bronte, TX 76933 | Oil & Gas Operator | Apr 2025 |
| 6746 | Magnolia Oil & Gas Operating LLC | Houston, TX 77046 | Oil & Gas Operator | Apr 2025 |
| 6747 | Magnolia Production Co | Atlanta, TX 75551 | Oil & Gas Operator | Apr 2025 |
| 6748 | Magnum Energy Inc | Norman, OK 73072-2403 | Oil & Gas Operator | Feb 2025 |
| 6749 | Magnum Engineering Company | Corpus Chrsti, TX 78401 | Oil & Gas Operator | Apr 2025 |
| 6750 | Magnum Hunter Production, Inc. | Irving, TX 75014 | Oil & Gas Operator | Dec 2019 |
| 6751 | Magnum Oil & Gas | Flower Mound, TX 75028 | Oil & Gas Operator | Jul 2000 |
| 6752 | Magnum Oilfield Services LLC | Bakersfield, CA 93309 | Oil Operator | Apr 2025 |
| 6753 | Magnum Operating, LLC | Corpus Chrsti, TX 78401 | Oil & Gas Operator | Apr 2025 |
| 6754 | Magnum Petroleum, Inc. | Palm Desert, CA 92260 | Oil & Gas Operator | Nov 2013 |
| 6755 | Magnum Producing & Operating Co. | Corpus Chrsti, TX 78471 | Oil & Gas Operator | Jan 2004 |
| 6756 | Magnum Producing, LP | Corpus Chrsti, TX 78401 | Oil & Gas Operator | Apr 2025 |
| 6757 | Magnum Production & Well Service | Iowa Park, TX 76367 | Oil & Gas Operator | Apr 2025 |
| 6758 | Magruder '81, LTD. | Midland, TX 79701 | Oil & Gas Operator | Jan 1995 |
| 6759 | Magruder, Edwin H., Jr. | Midland, TX 79701 | Oil & Gas Operator | Oct 2019 |
| 6760 | Maguire Oil Company | Dallas, TX 75270 | Oil & Gas Operator | Mar 2015 |
| 6761 | Mahfouz Energy Company | Houston, TX 77255 | Oil & Gas Operator | Nov 2020 |
| 6762 | Mahler & Scott | Ruidoso, NM 88355 | Oil & Gas Operator | Aug 2003 |
| 6763 | Mahler, Kelly Operating | Graham, TX 76450 | Oil & Gas Operator | Mar 2017 |
| 6764 | Mai Oil Operations, Inc. | Dallas, TX 75225 | Oil & Gas Operator | Dec 2024 |
| 6765 | Main Energy, Inc. | Houston, TX 77079 | Oil & Gas Operator | May 2009 |
| 6766 | Main Street Royalty, Inc. | Lockhart, TX 78644 | Oil & Gas Operator | Aug 1999 |
| 6767 | Majestic Oil & Gas Holding Co. | Midland, TX 79705 | Oil Operator | Apr 2025 |
| 6768 | Majestic Oil & Gas, Inc. | Pampa, TX 79066 | Oil & Gas Operator | May 2007 |
| 6769 | Majestic Petroleum Corporation | Dallas, TX 75230 | Oil & Gas Operator | Oct 1996 |
| 6770 | Majestic Resources, Inc. | Dripping SPGS, TX 78620 | Oil & Gas Operator | Nov 2007 |
| 6771 | Mak-J Energy Partners(TX),LTD. | Denver, CO 80206 | Oil & Gas Operator | Sep 2013 |
| 6772 | Makar Production Company | Amarillo, TX 79118 | Oil & Gas Operator | Apr 2025 |
| 6773 | Makk Oil Production Inc. | Monahans, TX 79756 | Oil & Gas Operator | Apr 2025 |
| 6774 | Mako Exploration Management, LLC | Shreveport, LA 71105 | Oil & Gas Operator | Apr 2025 |
| 6775 | Makoil, Inc. | Lake Forest, CA 92630 | Oil & Gas Operator | Jul 2007 |
| 6776 | Maledon Enterprises | Austin, TX 78738 | Oil & Gas Operator | Feb 1996 |
| 6777 | Mallon Oil Company | Denver, CO 80202 | Oil & Gas Operator | Jun 2005 |
| 6778 | Mallory, Meredith, Jr. | San Antonio, TX 78209 | Oil & Gas Operator | Jul 2002 |
| 6779 | Malone Oil Production | La Vernia, TX 78121 | Oil & Gas Operator | Apr 2025 |
| 6780 | Malson Oil Company | Crawford, OK 73638 | Oil & Gas Operator | Dec 2016 |
| 6781 | Mamerow Energy Corp | Ganado, TX 77962 | Oil & Gas Operator | Apr 2025 |
| 6782 | Mammoth Exploration LLC | Midland, TX 79701 | Oil & Gas Operator | Jul 2023 |
| 6783 | Mammoth Operating LLC | Spicewood, TX 78669 | Oil Operator | Apr 2025 |
| 6784 | Mandarin Oil & Gas Company | Austin, TX 78714 | Oil & Gas Operator | Apr 2025 |
| 6785 | Mandujano, Alfonso & Olga | Von Ormy, TX 78073 | Oil & Gas Operator | Dec 2014 |
| 6786 | Mandujano, Alfonso, Jr. | Von Ormy, TX 78073 | Oil Operator | Apr 2025 |
| 6787 | Manhattan Petroleum, Inc. | Midland, TX 79702 | Oil & Gas Operator | Apr 2025 |
| 6788 | Manley, John D. III, Oper., Inc | Corpus Chrsti, TX 78404 | Oil & Gas Operator | Feb 2016 |
| 6789 | Manning, Jack | Odessa, TX 79760 | Oil & Gas Operator | Dec 2003 |
| 6790 | Manti Exploration Operating LLC | Corpus Chrsti, TX 78403 | Oil & Gas Operator | Feb 2015 |
| 6791 | Manti Operating Company | Covington, LA 70435 | Oil & Gas Operator | Apr 2025 |
| 6792 | Manti Tarka Permian Op, LLC | Houston, TX 77056 | Oil & Gas Operator | Apr 2025 |
| 6793 | Mantle Oil & Gas, LLC | Friendswood, TX 77546 | Oil & Gas Operator | Apr 2025 |
| 6794 | Manuel Corporation | Wichita, KS 67206 | Oil & Gas Operator | Feb 2025 |
| 6795 | Manzanita Corporation | Midland, TX 79710 | Oil & Gas Operator | Nov 2008 |
| 6796 | Manzanita Operating, LLC | Midland, TX 79702 | Oil & Gas Operator | Apr 2025 |
| 6797 | Manzano LLC | Roswell, NM 88202 | Oil & Gas Operator | Apr 2025 |
| 6798 | Manzano Oil Corporation | Roswell, NM 88202 | Oil & Gas Operator | Feb 2005 |
| 6799 | Manziel Interests | Tyler, TX 75711 | Oil & Gas Operator | Jun 2004 |
| 6800 | Manziel Management Corporation | Tyler, TX 75711 | Oil Operator | Feb 2014 |