Poids Mi-Moyens Hommes
 | Roger Huerta | 6-2-0 UFC | #1853 |  |
 | Roger Zapata | 0-1-0 UFC | #6359 | |
 | Romain Debienne | 3-4-0 REC | #327 |  |
 | Roman Faraldo | 2-2-0 REC | #3807 | |
 | Romie Aram | 0-1-0 UFC | #5697 |  |
 | Ron Humphrey | 1-0-0 REC | #1881 | |
 | Ronald Jhun | 0-1-0 UFC | #6805 | |
 | Ronald Paradeiser | 11-4-0 REC | #366 |  |
 | Ronaldo Silva | 0-1-0 REC | #7522 |  |
 | Rory MacDonald | 9-4-0 UFC | #532 |  |
 | Ross Houston | #7253 |  | |
 | Ross Pointon | 0-2-0 UFC | #4434 |  |
 | Rostem Akman | 0-2-0 UFC | #3455 |  |
 | Rousimar Palhares | 8-4-0 UFC | #1085 | |
 | Rudy Delangue | #7773 | | |
 | Ruslan Kolodko | 0-2-0 REC | #3307 |  |
 | Rustam Khadisgadzhiev | 2-0-0 REC | #1759 |  |
 | Rustam Serbiev | #7728 | | |
 | Ryan Charlebois | 0-1-0 REC | #6438 | |
 | Ryan Laflare | 7-3-0 UFC | #1624 | |