| 1 | R & N Resources LLC | Bear Lake, PA 16402-2926 | Oil & Gas Operator | Dec 2024 |
| 2 | R & R Oil & Gas LLC | Big Spring, TX 79720 | Oil & Gas Operator | Dec 2024 |
| 3 | R B Robertson & Son Gas & Oil Co LP | New Bethlehem, PA 16242-0190 | Oil & Gas Operator | Dec 2024 |
| 4 | R Harris Gas & Oil Inc | Apollo, PA 15613-9636 | Oil & Gas Operator | Dec 2024 |
| 5 | R Joseph & Shelby J Maney | Warren, PA 16365-3670 | Oil & Gas Operator | Dec 2024 |
| 6 | Rabbitt C Michael | Chicora, PA 16025-1916 | Oil & Gas Operator | Dec 2015 |
| 7 | Ralph L Albright Drilling | Reno, NV 89511-7627 | Oil & Gas Operator | Dec 1991 |
| 8 | Randall Florence | Albion, PA 16401-9768 | Gas Operator | Dec 2010 |
| 9 | Range Opr Co | Yatesboro, PA 16263-0235 | Oil & Gas Operator | Dec 1999 |
| 10 | Range Resources Appalachia LLC | Canonsburg, PA 15317 | Oil & Gas Operator | Sep 2025 |
| 11 | Rannuff Oil & Gas Co | Waynesburg, PA 15370-1437 | Oil & Gas Operator | Dec 2024 |
| 12 | RC Southwell Oil LLC | Warren, PA 16365-3686 | Oil & Gas Operator | Dec 2024 |
| 13 | Re Fox & Assoc Inc | Pittsburgh, PA 15243-0130 | Gas Operator | Dec 1999 |
| 14 | Re Gas Dev LLC | State College, PA 16801-7085 | Oil & Gas Operator | Sep 2018 |
| 15 | Reclusive Energy LLC | Gifford, PA 16732 | Oil & Gas Operator | Dec 2020 |
| 16 | Red Jacket Energy LLC | Roulette, PA 16746-1408 | Oil & Gas Operator | Dec 2024 |
| 17 | Red Oak Energy LLC | Clarksburg, PA 15725-8824 | Oil & Gas Operator | Dec 2024 |
| 18 | Red Valley Resources LLC | McCordsville, IN 46055-0294 | Oil Operator | Dec 2015 |
| 19 | Redmill Drilling | Kittanning, PA 16201-7123 | Oil & Gas Operator | Sep 2025 |
| 20 | Reichard Equip Co | New Bethlehem, PA 16242-1936 | Gas Operator | Dec 2021 |
| 21 | Rejiss Assoc | Braddock, PA 15104-1948 | Oil & Gas Operator | Dec 2009 |
| 22 | Rejiss Assoc Holdings LLC | Braddock, PA 15104-1948 | Gas Operator | Dec 2024 |
| 23 | Remington Capital Holdings Inc | North East, PA 16428-0026 | Oil & Gas Operator | Dec 2022 |
| 24 | Remnant Group Inc | Pittsburgh, PA 15238-1359 | Oil & Gas Operator | Dec 2013 |
| 25 | Rensma Steven E | Titusville, PA 16354-5304 | Oil Operator | Dec 1993 |
| 26 | Repsol Oil & Gas USA, LLC | The Woodlands, TX 77381 | Oil & Gas Operator | Dec 2025 |
| 27 | Return Oil Corp | Oil City, PA 16301-0564 | Oil Operator | Dec 1992 |
| 28 | Rex Drummond | Conneaut, OH 44030-9678 | Oil & Gas Operator | Dec 2019 |
| 29 | Rex Energy Operating Corp. | State College, PA 16801 | Oil & Gas Operator | Jun 2012 |
| 30 | Rhoades Oil Co | Tulsa, OK 74136-5575 | Oil & Gas Operator | Aug 2013 |
| 31 | Rice Drilling B LLC | Canonsburg, PA 15317-5851 | Gas Operator | Sep 2025 |
| 32 | Richard B Herzog | Bradford, PA 16701-3619 | Oil Operator | Dec 2007 |
| 33 | Richard G Boarts | Ford City, PA 16226-7001 | Gas Operator | Dec 2012 |
| 34 | Richard H Burkland | Lemont Furnace, PA 15456-0073 | Oil & Gas Operator | Dec 2012 |
| 35 | Richards Drilling Co | Venango, PA 16440-1123 | Oil & Gas Operator | Dec 2015 |
| 36 | Rick & Sons Oil LLC | Warren, PA 16365-3561 | Oil & Gas Operator | Dec 2024 |
| 37 | Ridgeview Gas & Oil Inc | Templeton, PA 16259-4505 | Oil & Gas Operator | Dec 2024 |
| 38 | Ridgeview Gas Co | Templeton, PA 16259-4505 | Oil & Gas Operator | Dec 2010 |
| 39 | Ristau Ricky J | Warren, PA 16365-3560 | Oil & Gas Operator | Dec 2024 |
| 40 | River Ridge Gravel Co | Meadville, PA 16335-9149 | Oil Operator | Dec 2024 |
| 41 | RJ Schreiner SR | Freedom, PA 15042-9353 | Oil & Gas Operator | Dec 2015 |
| 42 | Roach & Assoc Inc | Pittsburgh, PA 15228-1924 | Gas Operator | Dec 2024 |
| 43 | Robert J & Wilma J Webster | Edinboro, PA 16412-4928 | Gas Operator | Dec 2018 |
| 44 | Rockdale Marcellus LLC | Canonsburg, PA 15317 | Gas Operator | Apr 2022 |
| 45 | Rocksauce Opr LLC | Canonsburg, PA 15317-3906 | Oil & Gas Operator | Dec 2024 |
| 46 | Roger K Dunham | Sheffield, PA 16347-0145 | Oil Operator | Dec 2016 |
| 47 | Ronald L Nick | Lucinda, PA 16235-3006 | Gas Operator | Dec 2023 |
| 48 | Roof Carl | Indiana, PA 15701 | Gas Operator | Dec 2024 |
| 49 | Roulette Oil & Gas LLC | Shinglehouse, PA 16748-3406 | Oil & Gas Operator | Sep 2025 |
| 50 | RS Gas Co Inc | Sprankle Mills, PA 15776-8312 | Gas Operator | Dec 2024 |
| 51 | Ruffner Clair L III | Marion Center, PA 15759-7818 | Gas Operator | Dec 2024 |
| 52 | Russ Holden Well SVC | Sheffield, PA 16347-2904 | Oil & Gas Operator | Dec 2024 |