Poids Mouches Hommes
 | Jacob Romero | #7534 |  | |
 | Jacob Silva | #6789 | | |
 | Jae Hoon Lee | #7137 |  | |
 | Jafel Filho | 3-3-0 UFC | #1535 |  |
 | Jaime Alvarez | #6523 | | |
 | Jaime Lloyd | #2952 | | |
 | Jamal Fayzullaev | #7313 |  | |
 | Jamie Abbott-Bissett | #3504 |  | |
 | Jamshid Tilyaev | #8191 |  | |
 | Jared Braun | #4818 | | |
 | Jarred Brooks | 2-2-0 UFC | #3549 | |
 | Jarret Betancourt | #8313 | | |
 | Javier Cepeda | #7502 | | |
 | Jawany Scott | #1554 |  | |
 | Jean Matos | #7662 | | |
 | Jean Sevalho | #1917 | | |
 | Jeff Molina | 3-0-0 UFC | #2357 | |
 | Jenel Lausa | 1-3-0 UFC | #3958 |  |
 | Jenilto Matos | #4908 | | |
 | Jeremia Siregar | #6890 |  |