Poids Moyens Hommes
 | Robin Roos | 0-3-0 REC | #3818 |  |
 | Rodolfo Vieira | 6-5-0 UFC | #967 |  |
 | Rodrigo Ruas | 0-1-0 UFC | #6200 | |
 | Roger Gracie | 0-1-0 UFC | #4131 | |
 | Roger Narvaez | 1-2-0 UFC | #3880 |  |
 | Roggy Lawson | 1-0-0 REC | #7885 |  |
 | Roman Dolidze | 9-5-0 UFC | #411 |  |
 | Roman Kopylov | 7-5-0 UFC | #402 |  |
 | Romero Cotton | 1-2-0 REC | #5515 | |
 | Romulo Oliveira | #8069 | | |
 | Ron Stallings | 1-2-0 UFC | #3964 | |
 | Ronaldo Souza | 9-7-0 UFC | #983 | |
 | Rory Markham | 1-2-0 UFC | #3952 | |
 | Rory Singer | 2-2-0 UFC | #4067 | |
 | Royce Alger | 0-2-0 UFC | #4947 | |
 | Rudyard Moncayo | 0-1-0 UFC | #6931 | |
 | Ruslan Shamilov | 4-0-0 REC | #384 | |
 | Ryan Gandra | 2-0-0 UFC | #212 | |
 | Ryan Janes | 2-2-0 UFC | #3834 |  |
 | Ryan Jensen | 2-6-0 UFC | #3175 | |