Tous les combattants
 | Ross Houston | #7733 |  | |
 | Ross Pearson | 12-13-0, 1NC UFC | #703 |  |
 | Ross Pointon | 0-2-0 UFC | #4961 | |
 | Rostem Akman | 0-2-0 UFC | #3705 |  |
 | Rostislav Yakushev | 0-1-0 REC | #7104 |  |
 | Rousimar Palhares | 8-4-0 UFC | #1127 |  |
 | Roxanne Modafferi | 4-8-0 UFC | #2009 |  |
 | Roy Nelson | 9-10-0 UFC | #791 | |
 | Roybert Echeverria | 0-1-0 REC | #6751 |  |
 | Royce Alger | 0-2-0 UFC | #5031 | |
 | Royce Gracie | 11-1-1 UFC | #455 | |
 | Royston Wee | 2-1-0 UFC | #3964 |  |
 | Roza Gumienna | 1-3-0 REC | #4619 |  |
 | Ruan Miqueias | #7917 | | |
 | Ruan Potts | 0-3-0 UFC | #4345 |  |
 | Ruben Vinci | #8173 |  | |
 | Ruben Wolf | 0-2-0 REC | #5192 |  |
 | Ruby Mesu | 0-1-0 REC | #6320 |  |
 | Rudson Caliocane | 0-1-0 REC | #6094 | |
 | Rudy Delangue | #8118 |  | |
 | Rudyard Moncayo | 0-1-0 UFC | #7083 | |
 | Ruel Panales | 0-2-0 REC | #4525 |  |
 | Rui Imura | 0-1-0 REC | #5099 |  |
 | Rui Kato | 0-1-0 REC | #6512 | |
 | Ruslan Abiltarov | 0-1-0 REC | #6505 |  |