Poids Plumes Hommes
 | John Teixeira da Conceicao | 0-1-0 UFC | #3585 |  |
 | Jonathan Pearce | 5-4-0 UFC | #1703 |  |
 | Joo Sang Yoo | 1-1-0 UFC | #2095 |  |
 | Jordan Griffin | 1-4-0 UFC | #3443 | |
 | Jordan Leavitt | 6-4-0 UFC | #742 | |
 | Jose Delano | 1-0-0 UFC | #1094 | |
 | Jose Delgado | 4-2-0 UFC | #242 | |
 | Josh Clopton | 0-2-0 UFC | #4950 | |
 | Josh Culibao | 3-4-1 UFC | #2480 |  |
 | Josh Emmett | 10-7-0 UFC | #384 | |
 | Josh Grispi | 0-4-0 UFC | #3522 | |
 | Joshua Weems | 0-1-0 UFC | #3883 | |
 | Juan Manuel Puig | 0-2-0 UFC | #4677 |  |
 | Julian Erosa | 9-9-0 UFC | #585 | |
 | Julio Arce | 6-4-0 UFC | #622 | |
 | Junior Assuncao | 2-3-0 UFC | #3972 | |
 | Justin Lawrence | 1-2-0 UFC | #4426 | |
 | Kaan Ofli | 3-2-0 UFC | #617 | |
 | Kai Kamaka III | 2-3-1 UFC | #758 | |
 | Kangjie Zhu | 0-1-0 UFC | #2289 |  |