Oil & Gas Companies in Toole County, MT
| Company Name | Company Location | Company Type | Most Recent Production |
| 1 | D & H Energy, LLC | Shelby, MT 59474 | Oil & Gas Operator | Jun 2025 |
| 2 | D & M Welding LLC | Kevin, MT 59454 | Oil & Gas Operator | Jul 2025 |
| 3 | D.C. Oil | Natalia, TX 78059 | Oil Operator | Oct 2025 |
| 4 | Dankbar, LLC | Kevin, MT 59454 | Oil Operator | Jul 2025 |
| 5 | Dart Oil & Gas Corporation | Mason, MI 48854 | Oil & Gas Operator | Jun 2018 |
| 6 | DNR Oil And Gas, Inc. | Englewood, CO 80155 | Oil & Gas Operator | Aug 2025 |
| 7 | Dry Coulee Oil & Gas Company | Oilmont, MT 59466 | Oil Operator | Oct 2003 |
Production numbers shown above are only for Toole County, MT and for the production period listed.