Sorted alphabetically by last name · 2775 fighters
| Name | Nickname | |
|---|---|---|
| RJ | Ramiro Jimenez | "El Cachanilla" |
| RB | Ramiz Brahimaj | |
| RT | Ramon Taveras | "The Savage" |
| RP | Ramona Pascual | |
| RN | Ramsey Nijem | |
| RM | Randa Markos | "Quiet Storm" |
| RB | Randy Brown | "Rudeboy" |
| RC |
| "The Zohan" |
| RC | Randy Couture | "The Natural" |
| RY | Rani Yahya |