Poids Plumes Hommes
 | Jim Hettes | 3-3-0 UFC | #3366 |  |
 | Jin Aoi | 0-2-0 REC | #3834 |  |
 | Jin Wakita | 0-1-0 REC | #5935 | |
 | Joan Rodriguez | 0-1-0 REC | #5325 |  |
 | Joanderson Brito | 7-3-0 UFC | #160 |  |
 | Joao Pedro Moreira | 1-1-0 REC | #2997 | |
 | Joao Pedro Saldanha | 1-1-0 REC | #6611 | |
 | Joao Roque | 0-1-0 UFC | #5133 |  |
 | Joao Souza | 0-1-0 REC | #6461 | |
 | Joe Doyle | 0-2-0 REC | #4275 |  |
 | Joel Batobo | 0-1-0 REC | #5781 |  |
 | Joey Gambino | 0-2-0 UFC | #5137 | |
 | John Albert | 1-4-0 UFC | #3635 | |
 | John Cofer | 0-2-0 UFC | #5330 | |
 | John De Jesus | 2-2-0 REC | #4588 | |
 | John Donaldson | 0-1-0 REC | #6450 | |
 | John Gunderson | 1-2-0 UFC | #4581 | |
 | John Teixeira da Conceicao | 0-1-0 UFC | #3369 | |
 | Johnny Soto | 0-1-0 REC | #7509 | |
 | Jonas Bilharinho | 1-1-0 REC | #5224 | |