Poids Plumes Hommes
 | Joanderson Brito | 7-3-0 UFC | #277 |  |
 | Joao Pedro Moreira | 1-1-0 REC | #3204 | |
 | Joao Pedro Saldanha | 1-1-0 REC | #6622 | |
 | Joao Roque | 0-1-0 UFC | #5075 |  |
 | Joao Souza | 0-1-0 REC | #6275 | |
 | Joe Doyle | 0-2-0 REC | #4477 |  |
 | Joel Batobo | 0-1-0 REC | #5636 |  |
 | Joey Gambino | 0-2-0 UFC | #5177 |  |
 | Joey Ruquet | 0-1-0 REC | #7204 | |
 | John Albert | 1-4-0 UFC | #3663 | |
 | John Cofer | 0-2-0 UFC | #5419 | |
 | John De Jesus | 2-2-0 REC | #4741 | |
 | John Donaldson | 0-1-0 REC | #6581 | |
 | John Gunderson | 1-2-0 UFC | #4630 | |
 | John Teixeira da Conceicao | 0-1-0 UFC | #3499 | |
 | Johnny Soto | 0-1-0 REC | #7741 | |
 | Jonas Bilharinho | 1-1-0 REC | #5522 | |
 | Jonas Magard | 7-2-0 REC | #1131 |  |
 | Jonatan Kujawa | 0-2-0 REC | #4805 |  |
 | Jonathan Caetano | 0-1-0 REC | #5464 | |