Combattants Etats-Unis
| 2026 |  | Roger Narvaez | 1-2-0 UFC | #3660 |  |
| 2027 |  | Roger Severson | 0-2-0 REC | #4266 | |
| 2028 |  | Roger Zapata | 0-1-0 UFC | #6333 | |
| 2029 |  | Roland Dunlap | 1-0-0 REC | #7138 | |
| 2030 |  | Roland Payne | 0-1-0 UFC | #4508 | |
| 2031 |  | Roland Pruden | 1-1-0 REC | #2905 | |
| 2032 |  | Roli Delgado | 1-2-0 UFC | #4459 | |
| 2033 |  | Roman Faraldo | 2-2-0 REC | #3789 | |
| 2034 |  | Roman Puga | 2-0-0 REC | #657 | |
| 2035 |  | Roman Salazar | 0-2-0, 1NC UFC | #3573 | |
| 2036 |  | Romero Cotton | 1-2-0 REC | #5021 | |
| 2037 |  | Ron Faircloth | #7313 | | |
| 2038 |  | Ron Humphrey | 1-0-0 REC | #1851 | |
| 2039 |  | Ron Stallings | 1-2-0 UFC | #3666 | |
| 2040 |  | Ron Van Clief | 0-1-0 UFC | #4547 | |
| 2041 |  | Ron Waterman | 2-1-1 UFC | #3438 | |
| 2042 |  | Ronald Jhun | 0-1-0 UFC | #6772 | |
| 2043 |  | Ronda Rousey | 6-2-0 UFC | #204 | |
| 2044 |  | Ronnie Gibbs | 1-0-0 REC | #2399 | |
| 2045 |  | Ronnie Lawrence | 2-1-0, 1NC UFC | #3340 | |
| 2046 |  | Ronny Hauser | 0-1-0 REC | #6993 | |
| 2047 |  | Roosevelt Roberts | 4-5-0, 1NC UFC | #1674 | |
| 2048 |  | Rory Light | 1-0-0 REC | #7215 | |
| 2049 |  | Rory Markham | 1-2-0 UFC | #3727 | |
| 2050 |  | Rory Singer | 2-2-0 UFC | #3815 | |