Poids Coqs Hommes
 | Jens Pulver | 6-2-1 UFC | #668 |  |
 | Jeovanny de Oliveira | 0-1-0 REC | #6945 |  |
 | Jeremy Strobel Jr. | 1-0-0 REC | #5026 | |
 | Jerrell Hodge | 0-1-0 REC | #6523 | |
 | Jerrod Sanders | 1-2-0, 1NC UFC | #4690 | |
 | Jesse Butler | 0-2-0 UFC | #4526 | |
 | Jesse Strader | 0-2-0 UFC | #5925 | |
 | Jessen Ramcharan | 0-1-0 REC | #7784 | |
 | Jessie Rosas | #8051 |  | |
 | Jhon Rodriguez Tacha | 0-1-0 REC | #5945 |  |
 | Ji Yong Yang | 1-1-0 REC | #3061 |  |
 | Jimmie Rivera | 7-4-0 UFC | #1593 | |
 | Jimmy Meza | 0-1-0 REC | #7783 | |
 | Jimmy Quinn | 3-2-0 REC | #3889 |  |
 | Jin Soo Son | 0-2-0 UFC | #4554 | |
 | Jinnosuke Kashimura | 2-3-0 REC | #1171 |  |
 | Joab Souza | 0-1-0 REC | #6365 | |
| Joao Dos Santos | 0-1-0 REC | #6862 | |
 | Joao Lucas Oliveira | 1-1-0 REC | #5958 | |
 | Joao Menezes | 0-1-0 REC | #5972 | |