Poids Plumes Hommes
 | Jamie Siraj | 0-1-0 UFC | #4247 |  |
 | Jan Masek | 2-3-0 REC | #1646 |  |
 | Jarno Errens | 1-3-0 UFC | #2742 |  |
 | Jason Knight | 4-5-0 UFC | #2229 |  |
 | Jason Young | 1-3-0 UFC | #3201 |  |
 | Javier Garcia | 1-1-0, 1NC REC | #4493 | |
 | Javier Reyes | 1-0-0 UFC | #440 |  |
 | Javier Vazquez | 1-0-0 UFC | #5267 | |
 | Jay Cucciniello | 0-1-0 UFC | #5752 | |
 | Jaylon McDaniel | 0-1-0 REC | #6906 | |
 | Jean Silva | 6-1-0 UFC | #111 |  |
 | Jean-Jacques Lubaya | 0-2-0 REC | #3784 |  |
 | Jeferson dos Santos | 0-1-0 REC | #5942 | |
 | Jefferson Pontes | 0-1-0 REC | #7005 | |
 | Jeka Saragih | 1-3-0 UFC | #2372 |  |
 | Jelle Zeegers | 0-1-0 REC | #6608 | |
 | Jeong Yeong Lee | 2-2-0 UFC | #1649 |  |
 | Jeremy Alba | 1-0-0 REC | #6590 | |
 | Jeremy Henry | 0-2-0 REC | #4106 | |
 | Jeremy Kennedy | 3-1-0 UFC | #1353 | |