Poids Plumes Hommes
 | Jin Wakita | 0-1-0 REC | #5955 |  |
 | Joan Rodriguez | 0-1-0 REC | #5436 |  |
 | Joanderson Brito | 7-3-0 UFC | #313 |  |
 | Joao Pedro Moreira | 1-1-0 REC | #3249 | |
 | Joao Pedro Saldanha | 1-1-0 REC | #6687 | |
 | Joao Roque | 0-1-0 UFC | #5153 |  |
 | Joao Souza | 0-1-0 REC | #6279 | |
 | Joe Doyle | 0-2-0 REC | #4527 |  |
 | Joel Batobo | 0-1-0 REC | #5683 |  |
 | Joey Gambino | 0-2-0 UFC | #5269 |  |
 | Joey Ruquet | 0-1-0 REC | #7136 | |
 | John Albert | 1-4-0 UFC | #3700 | |
 | John Cofer | 0-2-0 UFC | #5541 | |
 | John De Jesus | 2-2-0 REC | #4740 | |
 | John Donaldson | 0-1-0 REC | #6697 | |
 | John Gunderson | 1-2-0 UFC | #4654 | |
 | John Teixeira da Conceicao | 0-1-0 UFC | #3528 | |
 | Johnny Soto | 0-1-0 REC | #7816 | |
 | Jonas Bilharinho | 1-1-0 REC | #5645 | |
 | Jonas Magard | 7-2-0 REC | #1170 |  |