Poids Plumes Hommes
 | John De Jesus | 2-2-0 REC | #4448 |  |
 | John Donaldson | 0-1-0 REC | #6433 | |
 | John Gunderson | 1-2-0 UFC | #4442 | |
 | John Teixeira da Conceicao | 0-1-0 UFC | #3205 |  |
 | John Yannis | 1-1-0 UFC | #485 | |
 | Johnny Soto | 0-1-0 REC | #7242 | |
 | Jonas Bilharinho | 1-1-0 REC | #5132 | |
 | Jonatan Kujawa | 0-2-0 REC | #4377 |  |
 | Jonathan Caetano | 0-1-0 REC | #5486 | |
 | Jonathan Pearce | 5-4-0 UFC | #1585 | |
 | Jonathan Powell | #7650 | | |
 | Joo Sang Yoo | 1-1-0 UFC | #2338 |  |
 | Jora Ayvazyan | 3-0-0 REC | #1009 |  |
 | Jordan Barton | 1-1-0 REC | #4977 |  |
 | Jordan Bradshaw | 3-0-0 REC | #784 |  |
 | Jordan Griffin | 1-4-0 UFC | #3161 | |
 | Jordan Leavitt | 6-3-0 UFC | #496 | |
 | Jordan Oliver | 3-0-0 REC | #2590 | |
 | Jordy Bakkes | 1-2-1 REC | #4114 |  |
 | Jose Delano | 1-0-0 UFC | #482 | |