Poids Mi-Moyens Hommes
 | Joe Merritt | 0-1-0 UFC | #5892 |  |
 | Joel Alvarez | 8-4-0 UFC | #309 |  |
 | John Hathaway | 7-2-0 UFC | #1485 |  |
 | John Howard | 7-7-0 UFC | #1092 | |
 | John Maguire | 2-3-0 UFC | #3808 | |
 | Jon Koppenhaver | 1-1-0 UFC | #3455 | |
 | Jon Manley | 0-1-0 UFC | #6928 | |
 | Jon Tuck | 4-5-0 UFC | #2580 |  |
 | Jonathan Goulet | 4-5-0 UFC | #2611 |  |
 | Jonathan Meunier | 1-1-0 UFC | #3482 | |
 | Jonathan Micallef | 3-0-0 UFC | #864 |  |
 | Jonavin Webb | 0-2-0 UFC | #5575 | |
 | Jonny Parsons | 1-0-0 UFC | #3959 | |
 | Jordan Mein | 5-4-0 UFC | #2260 | |
 | Jordan Radev | 0-2-0 UFC | #5274 |  |
 | Jorge Lopez | 0-2-0 UFC | #4750 | |
 | Jorge Masvidal | 12-10-0 UFC | #346 | |
 | Jorge Santiago | 1-5-0 UFC | #3636 |  |
 | Jose Henrique | 1-0-0 UFC | #1712 | |
 | Josh Burkman | 6-12-0, 1NC UFC | #1846 | |