| Fighter | Record | Last Bout |
|---|---|---|
| Tony Fryklund | 14-9-1 | 2004-10-22 |
| Travis Fulton | 253-53-10 (1 NC) | 1999-07-16 |
| Urijah Faber | 35-11-0 | 2019-12-14 |
| Willamy Freire | 26-6-0 | 2011-01-22 |
| Xavier Foupa-Pokam | 32-22-0 | 2009-05-23 |
| Zane Frazier | 4-11-0 | 1996-05-17 |
| Zarah Fairn | 6-6-0 | 2023-09-02 |