Sorted alphabetically by last name · 2711 fighters
| Name | Nickname | |
|---|---|---|
| RA | Ricardo Almeida | "Big Dog" |
| RF | Ricardo Funch | "Golden Boy" |
| RL | Ricardo Lamas | "The Bully" |
| RR | Ricardo Ramos | |
| RR | Ricardo Romero | |
| RR | Ricco Rodriguez | "Suave" |
| RA | Rich Attonito | "The Raging Bull" |
| RC | Rich Clementi | "No Love" |
| RF | Rich Franklin | "Ace" |
| RC | Richard Crunkilton | "Cleat" |