| 3901 | Mto Oil Company | Okay, OK 74446-0354 | Oil Operator | Jul 2019 |
| 3902 | Mud Operations Inc | Ames, OK 73718-9501 | Oil & Gas Operator | Feb 2026 |
| 3903 | Muegge Don E | Lamont, OK 74643-5010 | Oil & Gas Operator | Dec 1996 |
| 3904 | Mueggenborg Derrick R Dba DRM Oil & Gas | Yale, OK 74085 | Oil Operator | Jan 2026 |
| 3905 | Mueller Thomas C | Fort Smith, AR 72913 | Gas Operator | Aug 2008 |
| 3906 | Mueller Thomas C LTD | Oklahoma City, OK 73102-5683 | Gas Operator | Aug 2008 |
| 3907 | Muirfield Resources Company | Tulsa, OK 74101-3166 | Oil & Gas Operator | Jun 2024 |
| 3908 | Mullen William Company | Edmond, OK 73083-1372 | Oil & Gas Operator | May 1999 |
| 3909 | Mullins Jimmy R Dba Southcreek Petroleum Co | Dibble, OK 73031 | Oil & Gas Operator | Jan 2021 |
| 3910 | Mullins, John S | | Oil Operator | Nov 2014 |
| 3911 | Munson Dave Company | Dallas, TX 75201-3591 | Oil Operator | Aug 1996 |
| 3912 | Munson, David M. | Dallas, TX 75201 | Oil & Gas Operator | Mar 2015 |
| 3913 | Muras Energy Inc | Edmond, OK 73013 | Oil & Gas Operator | Jan 2026 |
| 3914 | Murchison Oil & Gas Inc | Plano, TX 75024 | Oil & Gas Operator | Aug 2020 |
| 3915 | Murexco Petroleum Inc | Dallas, TX 75251 | Oil & Gas Operator | Oct 1996 |
| 3916 | Murphy Helen Colpitt Trust | Collinsville, OK 74021-0128 | Oil & Gas Operator | May 2002 |
| 3917 | Murphy Jack L | Tulsa, OK 74104-4915 | Oil Operator | Mar 2015 |
| 3918 | Musgrove Casey Oil | Ponca City, OK 74602-0391 | Oil & Gas Operator | Jun 2017 |
| 3919 | Musgrove Energy Inc | Ponca City, OK 74602 | Oil & Gas Operator | Dec 2025 |
| 3920 | Mustang Fuel Corp. Of Oklahoma | Oklahoma City, OK 73106 | Oil & Gas Operator | Nov 2016 |
| 3921 | Mustang Fuel Corporation | Oklahoma City, OK 73114 | Oil & Gas Operator | May 2026 |
| 3922 | Mustang Gas Products LLC | Oklahoma City, OK 73114-7406 | Oil & Gas Operator | Sep 2022 |
| 3923 | Mutual Oil & Gas Co | Akron, OH 44311 | Oil & Gas Operator | Dec 2000 |
| 3924 | MW Petroleum Corporation | Houston, TX 77056 | Oil & Gas Operator | Mar 2015 |
| 3925 | MXP Operating LLC | Covington, TX 76093 | Oil & Gas Operator | Jan 2026 |
| 3926 | Myers, Robert L | | Oil Operator | Feb 2026 |
| 3927 | Myjo Oil Corporation | Breckenridge, TX 76024 | Oil Operator | Jul 1996 |
| 3928 | Mystique Resources Company | Aurora, CO 80016 | Oil & Gas Operator | Feb 2023 |
| 3929 | N & N Oil LLC | Duncan, OK 73533 | Oil & Gas Operator | May 2023 |
| 3930 | N L S Inc | Kimberling City, MO 65686 | Oil & Gas Operator | Aug 2016 |
| 3931 | Nabob Production Company | Amarillo, TX 79105 | Gas Operator | Dec 1991 |
| 3932 | Nabors Well Services LTD | Houston, TX 77067-4536 | Oil Operator | Apr 2011 |
| 3933 | Nadel And Gussman LLC | Tulsa, OK 74119 | Oil & Gas Operator | May 2026 |
| 3934 | Naifco Oil & Gas LLC | Oklahoma City, OK 73107 | Oil & Gas Operator | Jan 2026 |
| 3935 | Nail Stephen Dba Nail Oil & Gas | Maud, OK 74854 | Oil Operator | Aug 2025 |
| 3936 | Nancy Oil & Gas Corp | Tulsa, OK 74101 | Oil Operator | Apr 2020 |
| 3937 | Nard Inc | Buffalo, OK 73834-9737 | Oil Operator | Dec 2005 |
| 3938 | Naro Oil Corporation | Dallas, TX 75230-1986 | Oil & Gas Operator | Nov 2003 |
| 3939 | National Cooperative RFG Assoc | McPherson, KS 67460-1404 | Oil & Gas Operator | Oct 2025 |
| 3940 | National Energy Group Inc | Dallas, TX 75206 | Oil & Gas Operator | Sep 2014 |
| 3941 | National Oil Co Ohio The | Columbus, OH 43215 | Oil & Gas Operator | Sep 1999 |
| 3942 | National Oil Company | Garden City, KS 67846 | Oil & Gas Operator | Jun 2024 |
| 3943 | Native Exploration Operating LLC | Oklahoma City, OK 73102-5804 | Oil & Gas Operator | Aug 2025 |
| 3944 | Native Gas Company LLC | Edmond, OK 73083-7435 | Oil & Gas Operator | Mar 2015 |
| 3945 | Natomas North America Inc | | Oil & Gas Operator | Aug 1993 |
| 3946 | Natural Gas Anadarko Company | Perryton, TX 79070 | Oil & Gas Operator | May 2026 |
| 3947 | Natural Gas Anadarko Inc | Perryton, TX 79070 | Oil & Gas Operator | May 1999 |
| 3948 | Natural Gas Compression Corp | Cleveland, OK 74020 | Oil & Gas Operator | Jan 2025 |
| 3949 | Natural Gas Pipeline Co Of Am LLC | Downers Grove, IL 60515-3708 | Oil & Gas Operator | Mar 2015 |
| 3950 | Natural Gas Resources Inc | Davenport, IA 52809-1675 | Oil & Gas Operator | Oct 2022 |
| 3951 | Natural Progression Oil & Gas Corp | Stillwater, OK 74075 | Oil & Gas Operator | Jan 2026 |
| 3952 | Natural Resources Operating LLC | Norman, OK 73071-1295 | Oil & Gas Operator | Jan 2023 |
| 3953 | Navajo Exploration, Inc. | Corpus Christ, TX 78410 | Oil & Gas Operator | May 2026 |
| 3954 | Navidad Operating Company, LLC | Flint, TX 75762 | Oil & Gas Operator | Jan 2025 |
| 3955 | Naylor Operating Company LLC | Perryton, TX 79079-9703 | Oil & Gas Operator | Sep 2012 |
| 3956 | Nbi Services, Inc. | Tulsa, OK 74159 | Oil & Gas Operator | May 2026 |
| 3957 | Neal Lloyd Wayne | Sapulpa, OK 74066-8216 | Oil Operator | Jan 2021 |
| 3958 | Neas Operating | Pampa, TX 79065 | Oil & Gas Operator | Oct 2011 |
| 3959 | Neg Operating LLC | Oklahoma City, OK 73101 | Oil & Gas Operator | Aug 2025 |
| 3960 | Neilson Inc | Nash, OK 73761 | Oil & Gas Operator | Aug 2022 |
| 3961 | Nelco Oil & Gas | Duncan, OK 73533-1516 | Oil & Gas Operator | Oct 2015 |
| 3962 | Nelson Billy L Trust | Okmulgee, OK 74447-2047 | Oil & Gas Operator | Feb 2015 |
| 3963 | Nelson Exploration Corporation | Cleveland, OK 74020-5725 | Oil & Gas Operator | Feb 2026 |
| 3964 | Nemaha Environmental Services LLC | Kremlin, OK 73753 | Oil Operator | Nov 2024 |
| 3965 | Neodyne Drilling Corporation | Tulsa, OK 74153-0326 | Oil & Gas Operator | Apr 2020 |
| 3966 | Neok Production Company LLC | Nowata, OK 74048 | Oil & Gas Operator | Feb 2026 |
| 3967 | Neosho Operating Services LLC | Neosho, MO 64850-0179 | Oil Operator | Mar 2017 |
| 3968 | Nerco Oil & Gas Inc | | Oil & Gas Operator | Dec 1996 |
| 3969 | New Century Petroleum Corp | Oklahoma City, OK 73105 | Oil & Gas Operator | May 2013 |
| 3970 | New Dominion LLC | Tulsa, OK 74119-3220 | Oil & Gas Operator | Feb 2026 |
| 3971 | New Energy Corporation | Rancho Santa Fe, CA 92067-1990 | Oil & Gas Operator | Jul 2024 |
| 3972 | New Gulf Resources, LLC | Tulsa, OK 74133 | Oil & Gas Operator | May 2018 |
| 3973 | New Horizon Resources LLC | Houston, TX 77057 | Oil & Gas Operator | May 2026 |
| 3974 | New Lift Inc | Nowata, OK 74048-0245 | Oil & Gas Operator | Mar 2015 |
| 3975 | New London Oil Inc. | Houston, TX 77253 | Oil & Gas Operator | Aug 2002 |
| 3976 | Newco Inc | Oklahoma City, OK 73177 | Oil Operator | Aug 1999 |
| 3977 | Newell Oil And Gas LLC | Shawnee, OK 74801-5783 | Oil & Gas Operator | Feb 2026 |
| 3978 | Newkumet Exploration, Inc. | Midland, TX 79702 | Oil & Gas Operator | Dec 2020 |
| 3979 | Newpark Drilling Fluids LLC | Clinton, OK 73601 | Oil Operator | Dec 2013 |
| 3980 | Newpek, LLC | Irving, TX 75039 | Oil & Gas Operator | Sep 2016 |
| 3981 | Nexco Inc | Oklahoma City, OK 73102-6801 | Oil & Gas Operator | Nov 2013 |
| 3982 | Nexstreem Corporation | | Oil & Gas Operator | Dec 2020 |
| 3983 | Nexus Resources Corporation | Drumright, OK 74030 | Oil & Gas Operator | Jan 2013 |
| 3984 | NFC Petroleum Corporation | Tulsa, OK 74121 | Oil & Gas Operator | Jun 1996 |
| 3985 | Nfcda Energy LLC | Edmond, OK 73013 | Oil & Gas Operator | Feb 2026 |
| 3986 | NHH Inc | Oklahoma City, OK 73162-7418 | Oil & Gas Operator | Feb 2002 |
| 3987 | Nichols Operating LLC | Fort Branch, IN 47648 | Oil & Gas Operator | Dec 2024 |
| 3988 | Nichols Water Service Inc | Forgan, OK 73938 | Oil & Gas Operator | May 2018 |
| 3989 | Nichols, Irl. A. Trust B | Duncan, OK 73534 | Oil & Gas Operator | Sep 2000 |
| 3990 | Nickell Oil Company | Walters, OK 73572 | Oil Operator | Apr 2018 |
| 3991 | Nickle Audrey O | Okmulgee, OK 74447-2823 | Oil & Gas Operator | Apr 2020 |
| 3992 | Nicor Supply Company | Golden, CO 80401 | Oil & Gas Operator | Jun 1993 |
| 3993 | Nielson & Associates, Inc | Cody, WY 82414 | Oil & Gas Operator | Feb 2016 |
| 3994 | Nijean, Inc. | Shawnee, OK 74802 | Oil & Gas Operator | Feb 2012 |
| 3995 | Nitro Petroleum Inc | Phoenix, AZ 85016-4599 | Oil & Gas Operator | May 2020 |
| 3996 | Nitro-Lift/Oklahoma Manufacturing LLC | Mill Creek, OK 74856 | Oil Operator | May 2026 |
| 3997 | Nivens Productions LLC | Coyle, OK 73027-9785 | Oil & Gas Operator | Aug 2024 |
| 3998 | Nixon Properties Inc | Tulsa, OK 74104 | Oil & Gas Operator | Aug 2023 |
| 3999 | Nject Disposal LLC | Houston, TX 77027 | Oil Operator | Mar 2017 |
| 4000 | Njre Operating Company | Tulsa, OK 74119 | Gas Operator | Dec 2016 |