| Fighter | Record | Last Bout |
|---|---|---|
| Jussier Formiga | 23-8-0 | 2020-06-06 |
| Justin Frazier | 10-3-0 | 2018-11-30 |
| Kalindra Faria | 18-8-1 | 2018-08-25 |
| Katsuhisa Fujii | 9-18-1 | 1999-11-19 |
| Kaue Fernandes | 11-3-0 | 2026-08-15 |
| Kelly Faszholz | 4-2-0 | 2016-10-01 |
| Kenny Florian | 14-6-0 | 2011-10-08 |
| Kevin Ferguson | 5-2-0 (1 NC) | 2010-05-08 |
| Lucas Fernando | 14-3-0 | 2026-08-15 |
| Luigi Fioravanti | 26-15-0 | 2009-02-07 |
| Luis Felipe Dias | 18-6-0 | 2026-09-05 |
| Luke Fernandez | 6-1-0 | 2026-03-07 |
| Maiquel Falcao | 37-10-0 (1 NC) | 2010-11-20 |
| Manon Fiorot | 13-2-0 | 2026-09-12 |
| Marcel Fortuna | 9-3-0 | 2017-11-11 |
| Masio Fullen | 11-7-0 | 2016-01-30 |
| Matt Frevola | 11-6-1 | 2025-10-18 |
| Melinda Fabian | 4-4-2 | 2018-06-23 |
| Michal Figlak | 8-2-0 | 2024-04-27 |
| Mirko Filipovic | 35-11-2 (1 NC) | 2015-04-11 |
| Nathan Fletcher | 9-3-0 | 2025-08-02 |
| Nick Fiore | 6-2-0 | 2023-05-20 |
| Paul Felder | 17-6-0 | 2020-11-14 |
| Pedro Falcao | 16-5-0 | 2025-04-05 |
| Philip De Fries | 12-6-0 (1 NC) | 2013-04-06 |
| Rafael Fiziev | 14-5-0 | 2026-06-27 |
| Renee Forte | 8-4-0 | 2014-03-15 |
| Ricardo Funch | 9-6-0 | 2012-06-22 |
| Rich Franklin | 29-7-0 (1 NC) | 2012-11-10 |
| Riki Fukuda | 24-9-0 (1 NC) | 2013-03-02 |
| Rinat Fakhretdinov | 24-1-1 | 2025-09-06 |
| Rob Font | 22-10-0 | 2026-03-07 |
| Ron Faircloth | 33-20-0 (1 NC) | 2005-10-07 |
| Sam Fulton | 0-2-0 | 1997-07-27 |
| Sarah Frota | 9-2-0 | 2019-07-27 |
| Scott Ferrozzo | 4-2-0 | 1997-02-07 |
| Scott Fiedler | 0-1-0 | 1996-07-12 |
| Spencer Fisher | 24-9-0 | 2012-06-22 |
| Tony Ferguson | 26-11-0 | 2024-08-03 |
| Tony Fryklund | 14-9-1 | 2004-10-22 |
| Torrez Finney | 11-1-0 | 2026-01-31 |
| Travis Fulton | 253-53-10 (1 NC) | 1999-07-16 |
| Tyrell Fortune | 18-4-0 (2 NC) | 2026-07-25 |
| 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 |