| 901 | Fun Investments, L.L.C. | | Oil & Gas Operator | Jan 2025 |
| 902 | Fundare Resources Operating Company LLC | | Oil & Gas Operator | Mar 2026 |
| 903 | Funk Oil & Operating, LLC | Russell, KS 67665 | Oil Operator | Jul 2024 |
| 904 | Furie Operating Alaska, LLC | | Gas Operator | Feb 2026 |
| 905 | Furie Operating, LLC | League City, TX 77573 | Oil & Gas Operator | Nov 2015 |
| 906 | Furr, Roy Estate Of | Midland, TX 79702 | Oil & Gas Operator | Jun 2016 |
| 907 | Furrh Inc. | | Oil Operator | Apr 1994 |
| 908 | Furry Oil & Gas, Inc. | Bangs, TX 76823 | Oil & Gas Operator | Jul 2026 |
| 909 | Furry Operating Account | Brownwood, TX 76804 | Oil & Gas Operator | Aug 2003 |
| 910 | Furry Producing Company | Brownwood, TX 76801 | Oil & Gas Operator | Jul 2026 |
| 911 | Furry, Myrl M. | Brownwood, TX 76801 | Oil & Gas Operator | Dec 2003 |
| 912 | Further Developm | | Oil Operator | Apr 1986 |
| 913 | Fuse Energy, LLC | Alvord, TX 76225 | Oil & Gas Operator | Jan 2019 |
| 914 | Fusion Energy Holdings, LLC | Throckmorton, TX 76483 | Oil Operator | Jul 2026 |
| 915 | Fusion XP, Inc. | Arlington, TX 76006 | Oil Operator | Apr 2014 |
| 916 | Future Energy Corp | Zanesville, OH 43701 | Oil & Gas Operator | Dec 1991 |
| 917 | Future Energy Li | | Oil Operator | Nov 1991 |
| 918 | Future Energy Partners | Bartlesville, OK 74005 | Oil & Gas Operator | Feb 2017 |
| 919 | Future Oil & Gas, Inc. | | Oil & Gas Operator | Mar 2010 |
| 920 | Future Petroleum Company LLC | Houston, TX 77027 | Oil & Gas Operator | Jun 2013 |
| 921 | Future Petroleum Corporation | Houston, TX 77002 | Oil & Gas Operator | Sep 1999 |
| 922 | Future Production Inc | Canton, OH 44708 | Oil & Gas Operator | Dec 2023 |
| 923 | FW Eagle Ford I, LLC | Houston, TX 77084 | Oil & Gas Operator | Jul 2026 |
| 924 | FW Midcon I, LLC | Oklahoma City, OK 73102 | Oil & Gas Operator | Mar 2026 |
| 925 | FWB Petroleum Inc | Euless, TX 76040 | Oil & Gas Operator | Dec 2000 |
| 926 | FWF Exploration Inc | | Oil Operator | Oct 1994 |
| 927 | FX Drilling Company, Inc. | Cut Bank, MT 59427 | Oil & Gas Operator | Apr 2026 |
| 928 | FX Energy Operating, LLC | Canadian, TX 79014 | Oil & Gas Operator | Jul 2026 |
| 929 | Fyler Oil, LLC | McPherson, KS 67460 | Oil Operator | Mar 2026 |
| 930 | Fyler, M. A. | Rangley, CO 81648 | Oil Operator | Mar 1988 |