Tous les combattants
 | Roxanne Modafferi | 4-8-0 UFC | #1918 |  |
 | Roy Nelson | 9-10-0 UFC | #763 | |
 | Roybert Echeverria | 0-1-0 REC | #6183 |  |
 | Royce Alger | 0-2-0 UFC | #4441 | |
 | Royce Gracie | 11-1-1 UFC | #399 |  |
 | Royston Wee | 2-1-0 UFC | #3493 |  |
 | Roza Gumienna | 1-3-0 REC | #4073 |  |
 | Ruan Miqueias | #7293 | | |
 | Ruan Potts | 0-3-0 UFC | #4070 |  |
 | Ruben Wolf | 0-2-0 REC | #4527 |  |
 | Ruby Mesu | 0-1-0 REC | #5463 |  |
 | Rudson Caliocane | 0-1-0 REC | #5539 | |
 | Rudyard Moncayo | 0-1-0 UFC | #6225 | |
 | Ruel Panales | 0-2-0 REC | #3945 |  |
 | Rui Imura | 0-1-0 REC | #4545 |  |
 | Ruslan Abiltarov | 0-1-0 REC | #5818 |  |
 | Ruslan Gabaraev | 1-2-0 REC | #1489 | |
 | Ruslan Kolodko | 0-2-0 REC | #3136 |  |
 | Ruslan Magomedov | 3-0-0 UFC | #2885 | |
 | Ruslan Medzhidov | 0-2-0 REC | #3709 |  |
 | Ruslan Shamilov | 3-0-0 REC | #470 | |
 | Russell Doane | 3-5-0 UFC | #2708 | |
 | Rustam Asuev | 1-0-0 REC | #2860 | |
 | Rustam Debishev | 1-0-0 REC | #6260 | |
 | Rustam Kerimov | 2-1-0 REC | #827 | |