Poids Mi-Lourds Hommes
 | Jesus Sanchez | 0-1-0 REC | #5740 |  |
 | Jhonathan Azevedo | 0-1-0 REC | #7870 |  |
 | Jimi Manuwa | 6-6-0 UFC | #1657 |  |
 | Jimmy Crute | 6-4-2 UFC | #874 |  |
 | Jiri Prochazka | 6-3-0 UFC | #76 |  |
 | Joachim Christensen | 1-3-0 UFC | #3932 |  |
 | Joao Paulo Fagundes | 0-1-0 REC | #7054 | |
 | Joe Moreira | 1-1-0 UFC | #4594 | |
 | Joe Schilling | 0-1-0 REC | #4943 |  |
 | Joe Slick | 1-1-0 UFC | #5143 | |
 | Joe Taylor | 2-1-0 REC | #2114 | |
 | Joe Vedepo | 0-2-0 UFC | #5588 | |
 | Joel Sutton | 2-0-0 UFC | #3874 | |
 | Joey Roberts | 0-1-0 UFC | #5547 | |
 | John Allan | 0-2-0, 1NC UFC | #3461 | |
| John Dowdy | 0-1-0 UFC | #7216 | |
 | Johnny Walker | 8-7-0, 1NC UFC | #310 | |
 | Jonathan Wilson | 1-3-0 UFC | #3860 | |
 | Jordan Nandor | 1-2-0, 1NC REC | #2803 |  |
 | Jordan Wright | 2-5-0 UFC | #2766 | |