| 701 | Moleo Gas Corp. | San Angelo, TX 76902 | Oil & Gas Operator | Apr 2018 |
| 702 | Moller, Herbert T. | Wichita Falls, TX 76301 | Oil & Gas Operator | Aug 2003 |
| 703 | Molly Oil & Gas, LLC | Dallas, TX 75209 | Oil & Gas Operator | Oct 2025 |
| 704 | Molopo Energy Texas, LLC | Canada, 00100 | Oil & Gas Operator | Jan 2015 |
| 705 | Molsdorf Ag LLC | McAllen, TX 78503 | Oil Operator | Sep 2013 |
| 706 | Momentum Energy Corporation | Austin, TX 78746 | Oil & Gas Operator | Oct 2025 |
| 707 | Momentum Energy, LLC | Midland, TX 79702 | Oil & Gas Operator | Feb 2004 |
| 708 | Momentum Oil & Gas, LLC | The Woodlands, TX 77382 | Oil & Gas Operator | May 2015 |
| 709 | Momentum Oil Company | Albany, TX 76430 | Oil & Gas Operator | May 2003 |
| 710 | Momentum Operating Co., Inc. | Albany, TX 76430 | Oil & Gas Operator | Oct 2025 |
| 711 | Momentum Production Corp. | Baytown, TX 77521 | Oil & Gas Operator | Oct 2025 |
| 712 | Mon Corp. | Pampa, TX 79066 | Oil & Gas Operator | Oct 2025 |
| 713 | Monadnock Resources Op Co, LLC | Dallas, TX 75209 | Oil & Gas Operator | Jan 2021 |
| 714 | Monadnock Resources, LLC | Addison, TX 75001 | Oil & Gas Operator | May 2020 |
| 715 | Monarch Operating Company | Graham, TX 76450 | Oil & Gas Operator | Jun 2006 |
| 716 | Moncrief W A Jr | Fort Worth, TX 76102 | Oil & Gas Operator | Aug 2025 |
| 717 | Moncrief, C. B. | Fort Worth, TX 76102 | Oil & Gas Operator | Aug 2021 |
| 718 | Mondiale Energy, Inc. | Brownwood, TX 76801 | Oil & Gas Operator | Oct 2025 |
| 719 | Mondo Operating Company | Kilgore, TX 75663 | Oil & Gas Operator | Oct 2025 |
| 720 | Monexco LLC | Dallas, TX 75204-2634 | Oil & Gas Operator | Jun 2025 |
| 721 | Mongoose Energy, LLC | San Antonio, TX 78209 | Oil & Gas Operator | Oct 2025 |
| 722 | Monitor O&G, L.L.C. | Frisco, TX 75034 | Oil & Gas Operator | Jan 2016 |
| 723 | Monsanto Company | Indianapolis, IN 46280 | Oil & Gas Operator | Jan 2005 |
| 724 | Montare Operating, LTD. | Flower Mound, TX 75022 | Oil & Gas Operator | Oct 2025 |
| 725 | Montclair Energy LLC | Edmond, OK 73034-7291 | Oil & Gas Operator | Jun 2025 |
| 726 | Montclair Production Company | Austin, TX 78755 | Oil & Gas Operator | Oct 2025 |
| 727 | Montco Oil & Gas, Inc. | Pampa, TX 79066 | Oil & Gas Operator | May 1999 |
| 728 | Monterey Resources LLC | Dallas, TX 75230 | Oil & Gas Operator | Oct 2019 |
| 729 | Montex Drilling Company LLC | Fort Worth, TX 76102 | Oil & Gas Operator | Oct 2025 |
| 730 | Montex Exploration Company | Houston, TX 77057 | Oil & Gas Operator | Mar 2011 |
| 731 | Montgomery Petroleum, Inc. | Dallas, TX 75206 | Oil & Gas Operator | Aug 2007 |
| 732 | Montgomery Royalty | Moran, TX 76464 | Oil & Gas Operator | Oct 2025 |
| 733 | Montrose Operating LLC | Broken Arrow, OK 74012 | Oil & Gas Operator | Oct 2025 |
| 734 | Monument Resources, Inc. | Castle Rock, CO 80104 | Oil & Gas Operator | Jun 2012 |
| 735 | Moody Energy Co. | Canadian, TX 79014 | Oil & Gas Operator | Dec 2004 |
| 736 | Moody Oil & Gas Co. | Bridgeport, WV 26330-1051 | Oil & Gas Operator | Dec 2004 |
| 737 | Moody Oil Co. | Pearsall, TX 78061 | Oil & Gas Operator | Oct 2025 |
| 738 | Moon Operating, Inc. | Longview, TX 75601 | Oil & Gas Operator | Mar 2003 |
| 739 | Moonlite Oil & Gas Company | Imperial, TX 79743 | Oil & Gas Operator | Oct 2025 |
| 740 | Moontower Resources Op, LLC | Austin, TX 78732 | Oil & Gas Operator | Apr 2025 |
| 741 | Moore & Gilmore | Midland, TX 79701 | Oil & Gas Operator | Oct 2008 |
| 742 | Moore County Gas Partners, L.P. | Borger, TX 79007 | Gas Operator | Oct 2025 |
| 743 | Moore Energy Services, LLC | Iowa Park, TX 76367 | Oil Operator | Mar 2024 |
| 744 | Moore Gas And Oil | Monahans, TX 79756 | Oil Operator | Oct 2025 |
| 745 | Moore Investment Co. | Abilene, TX 79604 | Oil & Gas Operator | Oct 2025 |
| 746 | Moore Oil And Gas | Burleson, TX 76028 | Oil & Gas Operator | Oct 2025 |
| 747 | Moore, J.W. Oil Co | Llano, TX 78643 | Oil Operator | Oct 2025 |
| 748 | Moore, John D. | Midland, TX 79708 | Oil & Gas Operator | Mar 1995 |
| 749 | Moore, Kirby | Ozona, TX 76943 | Oil & Gas Operator | Jul 1996 |
| 750 | Moore, Miles Inc. | Moran, TX 76464 | Oil & Gas Operator | Oct 2025 |
| 751 | Moore, Stephen Operating | Graham, TX 76450 | Oil & Gas Operator | Jun 2002 |
| 752 | Mooringsport Energy Prod. Co. | Shreveport, LA 71162 | Oil & Gas Operator | Oct 2025 |
| 753 | Moose Oil & Gas Co. | Houston, TX 77002 | Oil & Gas Operator | Feb 2000 |
| 754 | Moose Operating Co., Inc. | Houston, TX 77006 | Oil & Gas Operator | Oct 2025 |
| 755 | Moran-Lavaca, L.L.C. | Shreveport, LA 71134 | Oil Operator | Feb 2018 |
| 756 | Moransco Energy Corporation | Kilgore, TX 75663 | Oil & Gas Operator | Oct 2025 |
| 757 | More Texas Oil | Von Ormy, TX 78073 | Oil & Gas Operator | Oct 2025 |
| 758 | Morgan Creek Gas Processing Co. | Houston, TX 77027 | Gas Operator | Aug 1998 |
| 759 | Morgan Creek Production Co., Inc | Westbrook, TX 79565 | Oil & Gas Operator | Oct 2025 |
| 760 | Morgan Enterprises, Inc. | Houston, TX 77024 | Oil & Gas Operator | Oct 2025 |
| 761 | Morgan Oil Company | Nacogdoches, TX 75963 | Oil & Gas Operator | May 2006 |
| 762 | Morgan, C. V. Partnership | Olney, TX 76374 | Oil & Gas Operator | Jan 2009 |
| 763 | Morgas | Shamrock, TX 79079 | Gas Operator | Nov 1994 |
| 764 | Moriah Operating,LLC | Midland, TX 79701 | Oil & Gas Operator | Oct 2025 |
| 765 | Moriah Resources, Inc. | Midland, TX 79704 | Oil & Gas Operator | Mar 2008 |
| 766 | Mormar Family Holdings, L.L.C. | Breckenridge, TX 76424 | Oil & Gas Operator | Oct 2025 |
| 767 | Morningstar Gas, Inc. | Las Vegas, NV 89117 | Gas Operator | Oct 2025 |
| 768 | Morningstar Operating LLC | Fort Worth, TX 76102 | Oil & Gas Operator | Oct 2025 |
| 769 | Morningstar Partners, L.P. | Fort Worth, TX 76102 | Oil & Gas Operator | Apr 2022 |
| 770 | Morred, Inc. | Borger, TX 79007 | Oil & Gas Operator | Oct 2025 |
| 771 | Morrell, W. R. | Albany, TX 76430 | Oil & Gas Operator | Oct 2025 |
| 772 | Morris Operating Co | Lovington, NM 88260 | Oil & Gas Operator | Oct 2025 |
| 773 | Morris R. Greenhaw Oil&Gas, Inc | Desdemona, TX 76445 | Oil & Gas Operator | Oct 2025 |
| 774 | Morris, W. Dale Inc. | Mineral Wells, TX 76068 | Oil & Gas Operator | Oct 2025 |
| 775 | Morrison DRLG. & Prod. Co., Inc. | Abilene, TX 79606 | Oil & Gas Operator | Nov 2008 |
| 776 | Morrow Resources, Inc. | San Angelo, TX 76904 | Oil & Gas Operator | Oct 2004 |
| 777 | Morsey Oil & Gas Corporation | Corpus Chrsti, TX 78401 | Oil & Gas Operator | Oct 2025 |
| 778 | Mortimer Exploration Company | San Antonio, TX 78209 | Oil & Gas Operator | Sep 2003 |
| 779 | Mortimer Production Company | San Antonio, TX 78209 | Oil & Gas Operator | Oct 2025 |
| 780 | Morton Valley Oil & Gas, Inc. | Dallas, TX 75222 | Oil & Gas Operator | Jun 2007 |
| 781 | Morton, J. V. Oil Co. | Iowa Park, TX 76367 | Oil & Gas Operator | Nov 1999 |
| 782 | Mosaic Midland LLC | Dallas, TX 75367 | Oil Operator | Oct 2025 |
| 783 | Mosaic Oil LLC | Dallas, TX 75205 | Oil & Gas Operator | Oct 2025 |
| 784 | Mosaic Pecos LLC | Dallas, TX 75367 | Oil Operator | Oct 2025 |
| 785 | Mosaic Texas LLC | Dallas, TX 75205 | Oil & Gas Operator | Oct 2025 |
| 786 | Mosbacher Energy Company | Houston, TX 77002 | Oil & Gas Operator | Oct 2025 |
| 787 | Moseley, J. T. | Temple, TX 76502 | Oil & Gas Operator | Sep 2008 |
| 788 | Moses, Tom | Beaumont, TX 77702 | Oil Operator | Oct 2025 |
| 789 | Mosley Oil &Gas Inc | Houston, TX 77002 | Oil & Gas Operator | Oct 2025 |
| 790 | Mosman Operating, LLC | Dallas, TX 75204 | Oil Operator | Oct 2025 |
| 791 | Moss Petroleum Company | Dallas, TX 75207 | Oil & Gas Operator | Oct 2025 |
| 792 | Moss SWD, LLC | Andrews, TX 79714 | Oil Operator | Oct 2025 |
| 793 | Moss, William Corp. | Dallas, TX 75219 | Oil & Gas Operator | Oct 2002 |
| 794 | Mote Resources, Inc. | Dallas, TX 75225 | Oil & Gas Operator | Dec 2004 |
| 795 | Mountain Creek Oil Company, Inc. | Saint Jo, TX 76265 | Oil & Gas Operator | Oct 2025 |
| 796 | Mowata Oil Company | Victoria, TX 77903 | Oil & Gas Operator | Oct 1996 |
| 797 | Moxy Oil Company | Seguin, TX 78155 | Oil & Gas Operator | Aug 2003 |
| 798 | Moy, Gary | Falls City, TX 78113 | Oil & Gas Operator | Nov 1998 |
| 799 | Moylan, Jimmie C. | Eastland, TX 76448 | Oil & Gas Operator | Oct 2025 |
| 800 | MPG Petroleum | San Antonio, TX 78217 | Oil & Gas Operator | Aug 2003 |