Poids Mi-Moyens Hommes
 | Jivko Stoimenov | 0-1-0 REC | #7030 |  |
 | Jixie Molapo | 1-1-0 REC | #2307 |  |
 | Joaquin Buckley | 11-5-0 UFC | #140 |  |
 | Joe Jordan | 0-1-0 UFC | #6547 | |
 | Joe Merritt | 0-1-0 UFC | #5567 | |
 | Joe Middleton | 3-1-0 REC | #642 |  |
 | Joel Alvarez | 8-2-0 UFC | #281 |  |
 | Joel dos Santos | 0-2-0 REC | #5171 |  |
 | Joel Salviano | 0-1-0 REC | #5540 | |
 | Joey Davis | 0-1-0 REC | #6411 | |
 | Joey Hart | 3-3-0 REC | #2146 | |
 | Johan Rodriguez | 1-1-0 REC | #5398 |  |
 | John Adajar | 0-1-0 REC | #5551 |  |
 | John Caldone | 1-0-0 REC | #6514 | |
 | John Caseneuil | 1-2-0 REC | #3639 |  |
 | John Hathaway | 7-2-0 UFC | #1379 | |
 | John Howard | 7-7-0 UFC | #1039 | |
 | John Maguire | 2-3-0 UFC | #3544 | |
 | John Palaiologos | 1-4-0 REC | #3837 |  |
 | Joilton Lutterbach | 0-3-0 REC | #3757 | |