Poids Moyens Hommes
 | Robert Valiev | 0-2-0 REC | #5513 |  |
 | Robin Roos | 0-3-0 REC | #3842 |  |
 | Rodolfo Vieira | 6-5-0 UFC | #977 |  |
 | Rodrigo Ruas | 0-1-0 UFC | #6232 | |
 | Roger Gracie | 0-1-0 UFC | #4122 | |
 | Roger Narvaez | 1-2-0 UFC | #3896 |  |
 | Roggy Lawson | 1-0-0 REC | #7902 |  |
 | Roman Dolidze | 9-5-0 UFC | #413 |  |
 | Roman Kopylov | 7-5-0 UFC | #420 | |
 | Romero Cotton | 1-2-0 REC | #5546 | |
 | Romulo Oliveira | 0-1-0 REC | #6743 | |
 | Ron Stallings | 1-2-0 UFC | #3971 | |
 | Ronaldo Souza | 9-7-0 UFC | #986 | |
 | Rory Markham | 1-2-0 UFC | #3964 | |
 | Rory Singer | 2-2-0 UFC | #4102 | |
 | Royce Alger | 0-2-0 UFC | #4969 | |
 | Rudyard Moncayo | 0-1-0 UFC | #6947 | |
 | Ruslan Shamilov | 4-0-0 REC | #415 | |
 | Ryan Gandra | 2-0-0 UFC | #237 | |
 | Ryan Janes | 2-2-0 UFC | #3845 |  |