Poids Mi-Lourds Hommes
 | Jhonathan Azevedo | 0-1-0 REC | #7814 |  |
 | Jimi Manuwa | 6-6-0 UFC | #1677 |  |
 | Jimmy Crute | 6-4-2 UFC | #863 |  |
 | Jiri Prochazka | 6-3-0 UFC | #69 |  |
 | Joachim Christensen | 1-3-0 UFC | #3893 |  |
 | Joao Paulo Fagundes | 0-1-0 REC | #7013 | |
 | Joe Moreira | 1-1-0 UFC | #4551 | |
 | Joe Schilling | 0-1-0 REC | #4919 |  |
 | Joe Slick | 1-1-0 UFC | #5106 | |
 | Joe Taylor | 2-1-0 REC | #2023 | |
 | Joe Vedepo | 0-2-0 UFC | #5479 | |
 | Joel Sutton | 2-0-0 UFC | #3869 | |
 | Joey Roberts | 0-1-0 UFC | #5445 | |
 | John Allan | 0-2-0, 1NC UFC | #3444 | |
| John Dowdy | 0-1-0 UFC | #7135 | |
 | Johnny Walker | 8-7-0, 1NC UFC | #241 | |
 | Jonathan Wilson | 1-3-0 UFC | #3833 | |
 | Jordan Nandor | 1-2-0, 1NC REC | #2746 |  |
 | Jordan Wright | 2-5-0 UFC | #2772 | |
 | Jordan Young | 1-1-0 REC | #6882 | |