Oil & Gas Companies in Wyoming
| Company Name | Company Location | Company Type | Most Recent Production |
|---|
| 101 | Mountain Petroleum Corp | Denver, CO 80202 | Oil & Gas Operator | Apr 2013 |
| 102 | Mountain Resource Corporation | Salt Lake City, UT 84124 | Oil & Gas Operator | Dec 1988 |
| 103 | MRD Operating LLC (Delaware) | Houston, TX 77010 | Oil & Gas Operator | Jul 2015 |
| 104 | MTG Operating Inc | Ridgeland, MS 39158 | Gas Operator | Apr 2011 |
| 105 | Mueller Fred W | | Oil & Gas Operator | Dec 1995 |
| 106 | Mull Drilling Company | Wichita, KS 67206 | Oil & Gas Operator | Nov 2025 |
| 107 | Mundell F E | Watertown, SD 57201 | Oil & Gas Operator | Aug 1994 |
| 108 | Murex Petroleum Corporation | Humble, TX 77347 | Oil & Gas Operator | Dec 2025 |
| 109 | Murphy D V | | Oil Operator | Dec 1989 |
| 110 | Murphy Oil USA, Inc. | New Orleans, LA 70161 | Oil & Gas Operator | Jan 1993 |
| 111 | Murphy Sheldon L & Loretta | Newcastle, WY 82701 | Oil & Gas Operator | Jan 2026 |
| 112 | Mustang Oil & Gas Corporation | Wichita Falls, TX 76308 | Oil & Gas Operator | Jul 2021 |
| 113 | Mustang Resources LLC | Houston, TX 77046 | Oil & Gas Operator | Nov 2025 |
| 114 | MWJ Producing Company | Midland, TX 79701 | Oil & Gas Operator | Jul 1998 |
| 115 | Mystique Developments | Denver, CO 80202 | Oil & Gas Operator | Dec 1997 |
Production numbers shown above are only for Wyoming and for the production period listed.