Poids Lourds Hommes
 | Jovan Leka | 1-0-0 REC | #1995 |  |
 | Juan Adams | 1-3-0 UFC | #3188 |  |
 | Juan Espino | 2-1-0 UFC | #3025 |  |
 | Julian Sanchez | 0-1-0 UFC | #5641 | |
 | Julio Paulino | 0-2-0 UFC | #4135 | |
 | Junior Albini | 1-4-0 UFC | #3182 |  |
 | Junior Dos santos | 15-8-0 UFC | #156 | |
 | Justin Clarke | 2-1-0 REC | #1010 |  |
 | Justin Eilers | 1-3-0 UFC | #3286 | |
 | Justin Frazier | 0-1-0 UFC | #4290 | |
 | Justin Martin | 1-0-0 UFC | #4853 | |
 | Justin McCully | 2-2-0 UFC | #3625 | |
 | Justin Smith | 0-1-0 REC | #6944 | |
 | Justin Tafa | 4-5-0, 1NC UFC | #1186 |  |
 | Justin Willis | 4-1-0 UFC | #2578 | |
 | Justin Wren | 0-1-0 UFC | #6468 | |
 | Kacper Paczoski | 1-0-0 REC | #1491 |  |
 | Kamil Gawryjolek | 2-2-0 REC | #3494 | |
 | Kamil Minda | 2-2-0 REC | #4572 | |
 | Karl Williams | 3-1-0 UFC | #1593 |  |