Poids Lourds Hommes
 | Julio Paulino | 0-2-0 UFC | #4777 |  |
 | Junior Albini | 1-4-0 UFC | #3594 |  |
 | Junior Dos santos | 15-8-0 UFC | #177 | |
 | Justin Clarke | 3-1-0 REC | #1198 |  |
 | Justin Eilers | 1-3-0 UFC | #3658 | |
 | Justin Frazier | 0-1-0 UFC | #4865 | |
 | Justin Martin | 1-0-0 UFC | #5638 | |
 | Justin McCully | 2-2-0 UFC | #4126 | |
 | Justin Smith | 0-1-0 REC | #7442 | |
 | Justin Tafa | 4-5-0, 1NC UFC | #1543 |  |
 | Justin Willis | 4-1-0 UFC | #2829 | |
 | Justin Wren | 0-1-0 UFC | #7069 | |
 | Kacper Paczoski | 1-0-0 REC | #2566 |  |
 | Kamil Gawryjolek | 2-2-0 REC | #4060 | |
 | Kamil Minda | 2-2-0 REC | #4931 | |
 | Karl Williams | 3-1-0 UFC | #1813 |  |
 | Karrar Hammodi | #7499 |  | |
 | Kasim Aras | 2-3-0 REC | #2033 |  |
 | Katsuhisa Fujii | 1-1-0 UFC | #5605 |  |
 | Katsuyoshi Sasaki | 0-1-0 REC | #7383 | |