Poids Mi-Moyens Hommes
 | Jonathan Meunier | 1-1-0 UFC | #3237 |  |
 | Jonathan Micallef | 2-0-0 UFC | #438 |  |
 | Jonavin Webb | 0-2-0 UFC | #4895 |  |
 | Jonny Parsons | 1-0-0 UFC | #3717 | |
 | Jordan Mein | 5-4-0 UFC | #2238 | |
 | Jordan Radev | 0-2-0 UFC | #4776 |  |
 | Jorge Lopez | 0-2-0 UFC | #4413 | |
 | Jorge Masvidal | 12-10-0 UFC | #283 | |
 | Jorge Santiago | 1-5-0 UFC | #3167 |  |
 | Josh Burkman | 6-12-0, 1NC UFC | #1729 | |
 | Josh Koscheck | 15-10-0 UFC | #276 | |
 | Josh Neer | 6-9-0 UFC | #1737 | |
 | Josh Quinlan | 1-3-0 UFC | #3131 | |
 | Josh Rafferty | 0-1-0 UFC | #5663 | |
 | Josh Stuart | 0-1-0 UFC | #5523 | |
 | Josiah Harrell | 0-1-0 UFC | #709 | |
 | Junie Browning | 1-1-0 UFC | #3940 | |
 | Justin Edwards | 2-5-0 UFC | #3056 | |
 | Jutaro Nakao | 1-1-0 UFC | #4567 |  |
 | K.J. Noons | 2-3-0, 1NC UFC | #3111 | |