| 1 | L & M Petroleum Co | Reno, OH 45773 | Oil & Gas Operator | Dec 1987 |
| 2 | L & S Oil And Gas | Newark, OH 43055-8732-8732 | Oil & Gas Operator | Dec 2014 |
| 3 | Lang Larry D | Beverly, OH 45715 | Oil & Gas Operator | Dec 2023 |
| 4 | Leader Equities Inc | Columbus, OH 43214 | Oil & Gas Operator | Dec 1988 |
| 5 | Levengood Oil & Gas(Us)In | Dover, OH 44621-2900-2900 | Oil & Gas Operator | Dec 1997 |
| 6 | Liberty Oil And Gas Corp. | Olney, IL 62450-2489-2489 | Oil & Gas Operator | Dec 2021 |
| 7 | Lippizan Petroleum, Inc. | Ellenboro, WV 26346 | Oil & Gas Operator | Dec 2023 |
| 8 | Lothes John W | Newark, OH 43055 | Oil & Gas Operator | Dec 2023 |
| 9 | Lucas Well Service, Inc. | Parkersburg, WV 26101 | Oil & Gas Operator | Dec 2021 |
| 10 | Ludlow Oil & Gas Company LLC | New Matamoras, OH 45767-5058-5058 | Oil & Gas Operator | Dec 2023 |
| 11 | Lutes Daun | New Matamoras, OH 45767 | Oil & Gas Operator | Dec 2023 |
| 12 | Lydic, W. J., Inc. | Zanesville, OH 43702-2310-2310 | Oil & Gas Operator | Jan 2005 |