| 401 | Princess Three Corporation | Henderson, TX 75653 | Oil & Gas Operator | Apr 2020 |
| 402 | Princess Three Operating, LLC | Henderson, TX 75653 | Oil & Gas Operator | Apr 2025 |
| 403 | Pringle Operating Co. | Tulsa, OK 74103 | Oil & Gas Operator | Aug 2015 |
| 404 | Priority Holdings LLC | Marlow, OK 73055 | Oil Operator | Dec 2024 |
| 405 | Prize Operating Company | Grapevine, TX 76051 | Oil & Gas Operator | Aug 2016 |
| 406 | Pro-Energy Inc | Tulsa, OK 74136-5925 | Oil Operator | Dec 2024 |
| 407 | Proctor Dale & Mildred | Wetumka, OK 74883-6272 | Gas Operator | Dec 2024 |
| 408 | Producers Oil Company | Tulsa, OK 74103 | Oil & Gas Operator | Jan 2007 |
| 409 | Producers Operating Co Inc | Amarillo, TX 79105 | Oil & Gas Operator | Apr 2025 |
| 410 | Production Gathering Co | Dallas, TX 75243 | Oil & Gas Operator | Apr 2009 |
| 411 | Production Systems Inc | Tulsa, OK 74103 | Oil & Gas Operator | Jan 2007 |
| 412 | Proex Energy Corp | | Oil & Gas Operator | Dec 1997 |
| 413 | Proex Energy Management, L.L.C. | Spring, TX 77386 | Oil & Gas Operator | Apr 2025 |
| 414 | Prompt Operating LLC | Velma, OK 73491 | Oil Operator | Dec 2024 |
| 415 | Prospect Enterprises Inc | Wetumka, OK 74883-0068 | Oil & Gas Operator | Apr 2004 |
| 416 | Prospective Investment & Trading | Scottsdale, AZ 85261-4190 | Oil & Gas Operator | Jun 2016 |
| 417 | Prosper Oil & Gas,Inc. | Dallas, TX 75201 | Oil & Gas Operator | Apr 2025 |
| 418 | Prosperous Oil & Gas Inc | Okmulgee, OK 74447 | Oil & Gas Operator | Dec 2024 |
| 419 | Protege Energy II LLC | Tulsa, OK 74135-3252-3252 | Oil & Gas Operator | Dec 2013 |
| 420 | Protege Energy LLC | Tulsa, OK 74135 | Oil & Gas Operator | Jan 2018 |
| 421 | Prough A J | Gotebo, OK 73041 | Oil Operator | Apr 2014 |
| 422 | Proven Reserves Management, Inc. | Dallas, TX 75370 | Oil & Gas Operator | Jan 2025 |
| 423 | Providence Energy Corporation | Broken Arrow, OK 74013-3783 | Oil & Gas Operator | Feb 1994 |
| 424 | Providence Exploration & Production Inc | Fort Smith, AR 72913-5171 | Gas Operator | Dec 2012 |
| 425 | Providence Oil & Gas Corp | Tulsa, OK 74135-5463 | Oil & Gas Operator | May 2005 |
| 426 | Pruitt Operating Company LLC | Ratliff City, OK 73481-5802 | Oil & Gas Operator | Jan 2025 |
| 427 | Pryor, Curtis | Lubbock, TX 79424 | Oil & Gas Operator | Dec 1998 |
| 428 | Pryor, VIctor W., Jr. | Holdenville, OK 74848 | Oil & Gas Operator | Apr 2017 |
| 429 | Psa Inc | Chandler, OK 74834-4222 | Oil & Gas Operator | Dec 2024 |
| 430 | Psec Inc | Tulsa, OK 74102-0871 | Oil & Gas Operator | Dec 2016 |
| 431 | PT II LTD | | Oil & Gas Operator | Oct 2004 |
| 432 | Pullers Oil Company LLC | Blackwell, OK 74631-9512 | Oil & Gas Operator | Jan 2025 |
| 433 | Pulliam Dennis L | Mannford, OK 74044-9733 | Oil & Gas Operator | Nov 2001 |
| 434 | Pulliam IVan Henry | Coweta, OK 74429 | Oil & Gas Operator | Dec 2017 |
| 435 | Pulliam Ken D | Bristow, OK 74010-8648 | Oil & Gas Operator | Feb 2012 |
| 436 | Pulliam Melvin | Mannford, OK 74044 | Oil & Gas Operator | Jul 2019 |
| 437 | Puma Petroleum Corporation | Tulsa, OK 74152-0129 | Oil Operator | Feb 2004 |
| 438 | Pump It Up LLC | Owasso, OK 74055-0723 | Oil Operator | Jun 2024 |
| 439 | Pumping Services Inc | Seminole, OK 74868-2421 | Oil & Gas Operator | Feb 2023 |
| 440 | Pure Energy Systems Inc | Olive Branch, MS 38654-9041 | Gas Operator | Dec 2024 |
| 441 | Pure Oil Co | | Oil & Gas Operator | Dec 1996 |
| 442 | Putnam Phyllis L | Bartlesville, OK 74006-7326 | Oil & Gas Operator | May 2021 |
| 443 | PV Oil & Gas LLC | Ratliff City, OK 73481 | Oil Operator | Dec 2024 |
| 444 | PVR Gas Processing LLC | Irving, TN 75039 | Oil & Gas Operator | Feb 2015 |
| 445 | PXP Gulf Coast Inc. | Houston, TX 77002 | Oil & Gas Operator | Mar 2015 |
| 446 | Pybas Robert | Wanette, OK 74878 | Oil Operator | Apr 2014 |
| 447 | Pyramid Energy Inc | San Antonio, TX 78216 | Oil & Gas Operator | Feb 2012 |
| 448 | Pyramid Oil Of America, Inc. | Nichols Hill, OK 73116 | Oil & Gas Operator | Dec 2024 |
| 449 | Pyro Energy Corp | Kingwood, TX 77339-2102 | Oil & Gas Operator | Mar 1998 |