Poids Lourds Hommes
 | Roberto Traven | 1-1-0 UFC | #4561 |  |
 | Robin Fosum | 2-0-1 REC | #5343 |  |
 | Rodrigo Nascimento | 4-3-0, 1NC UFC | #1254 | |
 | Roger Hollett | 0-2-0 UFC | #4858 |  |
 | Rolles Gracie | 0-1-0 UFC | #6268 | |
 | Ron Faircloth | #7400 |  | |
 | Ron Waterman | 2-1-1 UFC | #3525 | |
 | Rony Bouzy | 1-2-0 REC | #2050 |  |
 | Roque Martinez | 0-3-0 UFC | #4477 |  |
 | Roy Nelson | 9-10-0 UFC | #789 | |
 | Ruan Potts | 0-3-0 UFC | #4263 |  |
 | Ruben Wolf | 0-2-0 REC | #4846 |  |
 | Ruslan Magomedov | 3-0-0 UFC | #3045 |  |
 | Ruslan Medzhidov | 0-2-0 REC | #4084 |  |
 | Ryan Bader | 15-5-0 UFC | #169 | |
 | Ryan Parker | 0-1-0 UFC | #6780 | |
 | Ryan Spann | 10-6-0 UFC | #197 | |
 | Ryo Sakai | 0-2-0 REC | #3855 |  |
 | Saeed Hosseini | 0-1-0 UFC | #5210 |  |
 | Said Sowma | 0-2-0 REC | #6681 | |