Poids Lourds Hommes
 | Roberto Traven | 1-1-0 UFC | #4605 |  |
 | Robin Fosum | 2-0-1 REC | #5379 |  |
 | Rodrigo Nascimento | 4-3-0, 1NC UFC | #1288 | |
 | Roger Hollett | 0-2-0 UFC | #4865 |  |
 | Rolles Gracie | 0-1-0 UFC | #6251 | |
 | Ron Faircloth | #7414 |  | |
 | Ron Waterman | 2-1-1 UFC | #3556 | |
 | Rony Bouzy | 1-2-0 REC | #2114 |  |
 | Roque Martinez | 0-3-0 UFC | #4512 |  |
 | Roy Nelson | 9-10-0 UFC | #827 | |
 | Ruan Potts | 0-3-0 UFC | #4267 |  |
 | Ruben Wolf | 0-2-0 REC | #4884 |  |
 | Ruslan Magomedov | 3-0-0 UFC | #3070 |  |
 | Ruslan Medzhidov | 0-2-0 REC | #4136 |  |
 | Ryan Bader | 15-5-0 UFC | #171 | |
 | Ryan Parker | 0-1-0 UFC | #6783 | |
 | Ryan Spann | 10-6-0 UFC | #220 | |
 | Ryo Sakai | 0-2-0 REC | #3913 |  |
 | Saeed Hosseini | 0-1-0 UFC | #5230 |  |
 | Said Sowma | 0-2-0 REC | #6774 | |