Poids Coqs Hommes
 | John Lineker | 12-4-0 UFC | #514 |  |
 | John Yannis | 1-2-0 UFC | #1083 |  |
 | Johnny Bedford | 2-3-0, 1NC UFC | #3365 | |
 | Johnny Eduardo | 3-5-0 UFC | #2990 | |
 | Johnny Munoz Jr | 2-4-0 UFC | #3277 | |
 | Jonathan Brookins | 2-3-0 UFC | #3023 | |
 | Jonathan Martinez | 10-5-0 UFC | #702 | |
 | Jose Alberto Quinonez | 5-4-0 UFC | #2322 |  |
 | Jose Aldo | 14-9-0 UFC | #72 | |
 | Jose Johnson | 1-3-0 UFC | #2740 | |
 | Jose Torres | 1-1-0 UFC | #2756 | |
 | Joseph Sandoval | 0-2-0 UFC | #5909 | |
 | Josias Musasa | 0-2-0 UFC | #2570 |  |
 | Journey Newson | 1-4-0, 1NC UFC | #3336 | |
 | JP Buys | 0-4-0 UFC | #3248 |  |
 | Juan Diaz | 1-0-0 UFC | #791 |  |
 | Jumabieke Tuerxun | 0-3-0 UFC | #3776 |  |
 | Kai Asakura | 1-2-0 UFC | #380 |  |
 | Ken Stone | 2-2-0 UFC | #3671 | |
 | Kevin Natividad | 0-3-0 UFC | #3637 | |