Poids Plumes Hommes
 | John Donaldson | 0-1-0 REC | #6373 |  |
 | John Gunderson | 1-2-0 UFC | #4453 | |
 | John Teixeira da Conceicao | 0-1-0 UFC | #3188 |  |
 | John Yannis | 1-1-0 UFC | #449 | |
 | Johnny Soto | 0-1-0 REC | #7251 | |
 | Jonas Bilharinho | 1-1-0 REC | #5154 | |
 | Jonatan Kujawa | 0-2-0 REC | #4354 |  |
 | Jonathan Caetano | 0-1-0 REC | #5536 | |
 | Jonathan Pearce | 5-4-0 UFC | #1594 | |
 | Jonathan Powell | #7625 | | |
 | Joo Sang Yoo | 1-1-0 UFC | #2330 |  |
 | Jora Ayvazyan | 3-0-0 REC | #970 |  |
 | Jordan Barton | 1-1-0 REC | #4936 |  |
 | Jordan Bradshaw | 3-0-0 REC | #745 |  |
 | Jordan Griffin | 1-4-0 UFC | #3194 | |
 | Jordan Leavitt | 6-3-0 UFC | #478 | |
 | Jordan Oliver | 3-0-0 REC | #2586 | |
 | Jordy Bakkes | 1-2-1 REC | #4094 |  |
 | Jose Delano | 1-0-0 UFC | #454 | |
 | Jose Delgado | 3-1-0 UFC | #443 | |