Oil & Gas Companies in Johnson County, WY
| Company Name | Company Location | Company Type | Most Recent Production |
|---|
| 1 | Altex Oil Company | Breckenridge, CO 80424 | Oil & Gas Operator | Dec 2005 |
| 2 | American Exploration Company | Houston, TX 77010 | Oil & Gas Operator | Jan 2000 |
| 3 | Anadarko E&P Onshore LLC | Houston, TX 77046 | Oil & Gas Operator | Oct 2025 |
| 4 | Anadarko Petroleum Corporation | Houston, TX 77251 | Oil & Gas Operator | Jul 2025 |
| 5 | Angus Petroleum Corporation | Chicago, IL 60660 | Oil & Gas Operator | Dec 2022 |
| 6 | Anschutz Exploration Corporation | Denver, CO 80202 | Oil & Gas Operator | Oct 2025 |
| 7 | Anschutz Oil Company LLC | Denver, CO 80202 | Oil & Gas Operator | Sep 2020 |
| 8 | Apache Corporation | Houston, TX 77042 | Oil & Gas Operator | Oct 2025 |
| 9 | Argent Energy (Us) Holdings Inc | Sugar Land, TX 77479 | Oil & Gas Operator | Sep 2021 |
| 10 | Arjay Oil Company | Salt Lake City, UT 84110 | Oil & Gas Operator | May 2000 |
| 11 | Atomic Oil & Gas LLC | Lakewood, CO 80228 | Oil & Gas Operator | Dec 2012 |
| 12 | Atx Energy Partners LLC | Austin, TX 78716 | Oil & Gas Operator | Aug 2025 |
| 13 | Axiom Energy LLC | Park City, UT 84098 | Oil Operator | Feb 2010 |
| 14 | Aztec Gas And Oil Corporation | Elephant Butte, NM 87935-0370 | Oil & Gas Operator | Mar 2005 |
Production numbers shown above are only for Johnson County, WY and for the production period listed.