| 2801 | Cypress E & P Corporation | Leander, TX 78646 | Oil & Gas Operator | Sep 2016 |
| 2802 | Cypress Exploration Company | Tulsa, OK 74132 | Oil & Gas Operator | Jul 2024 |
| 2803 | Cypress Gas Pipeline Company | | Oil Operator | Dec 1998 |
| 2804 | Cypress Gas Pipeline, LLC | | Oil Operator | Sep 2019 |
| 2805 | Cypress Oil Company, Inc. | | Oil & Gas Operator | Aug 2003 |
| 2806 | Cypress Operating, Inc. | Shreveport, LA 71101 | Oil & Gas Operator | Oct 2024 |
| 2807 | Cypress Partners, Inc. | Houston, TX 77068 | Oil & Gas Operator | May 1999 |
| 2808 | Cypress Production, Inc. | Azle, TX 76020 | Oil & Gas Operator | Oct 2024 |
| 2809 | Cypress Resources | | Oil & Gas Operator | Jul 2004 |
| 2810 | Cyrus, Scott | Louisa, KY 41230 | Oil Operator | Dec 2022 |
| 2811 | Cyrus, Wade T | Fort Gay, WV 25574 | Oil & Gas Operator | Dec 2013 |
| 2812 | Czar Resources Inc | Houston, TX 77060 | Oil & Gas Operator | Oct 1992 |
| 2813 | Czarniak, Dennis G. | Holland, NY 14080 | Gas Operator | Dec 2023 |
| 2814 | Czerniak, Michael A. And Cheryl A. | Lakewood, NY 14750 | Gas Operator | Dec 2023 |
| 2815 | Czesak Dairy Farm, LLC | Chaffee, NY 14030 | Gas Operator | Dec 2023 |
| 2816 | Czworka, Terry D. | Le Roy, NY 14482 | Gas Operator | Dec 2023 |