Oil & Gas Companies in Ashtabula County, OH
| Company Name | Company Location | Company Type | Most Recent Production |
| 1 | D & L Energy Inc | Canton, OH 44718 | Oil & Gas Operator | Dec 2016 |
| 2 | Dart Oil Company | Parker, CO 80134 | Oil & Gas Operator | Dec 2024 |
| 3 | David A Waldron & Assoc | Wooster, OH 44691 | Oil & Gas Operator | Dec 2016 |
| 4 | David R Hill Inc | Byesville, OH 43723 | Oil & Gas Operator | Dec 2024 |
| 5 | Dci Petroleum Inc | University Heights, OH 44118-3818 | Oil & Gas Operator | Dec 2017 |
| 6 | Dennis Oil & Gas LLC | Jefferson, OH 44047 | Oil & Gas Operator | Dec 2024 |
| 7 | Devore Anthony D | Gambier, OH 43022 | Oil & Gas Operator | Dec 2010 |
| 8 | Diamond Shamrock Chem Co | Irving, TX 75061 | Oil & Gas Operator | Dec 1990 |
| 9 | Dietrich Philip H | Jefferson, OH 44047 | Oil & Gas Operator | Dec 2024 |
| 10 | Diversified Production LLC | Keithville, LA 71047 | Oil & Gas Operator | Dec 2025 |
| 11 | Dome Drilling Co | Westlake, OH 44145-1964 | Oil & Gas Operator | Dec 2009 |
| 12 | Dome Producing | Cleveland, OH 44114 | Oil & Gas Operator | Dec 1988 |
| 13 | Dominion East Ohio | North Canton, OH 44720 | Oil & Gas Operator | Dec 2023 |
| 14 | Dry Hole Producing LLC | Poland, OH 44514 | Oil & Gas Operator | Dec 2024 |
| 15 | Dry Hole Producing LP | Poland, OH 44514-3631 | Oil & Gas Operator | Dec 2019 |
| 16 | Duck Creek Energy Inc | Brecksville, OH 44141 | Oil & Gas Operator | Dec 2024 |
Production numbers shown above are only for Ashtabula County, OH and for the production period listed.