Poids Plumes Hommes
 | Joel Batobo | 0-1-0 REC | #5761 |  |
 | Joey Gambino | 0-2-0 UFC | #4808 |  |
 | John Albert | 1-4-0 UFC | #3357 | |
 | John Cofer | 0-2-0 UFC | #4833 | |
 | John De Jesus | 2-2-0 REC | #4338 | |
 | John Donaldson | 0-1-0 REC | #6238 | |
 | John Gunderson | 1-2-0 UFC | #4251 | |
 | John Teixeira da Conceicao | 0-1-0 UFC | #2971 |  |
 | John Yannis | 0-1-0 UFC | #4226 | |
 | Johnny Soto | 0-1-0 REC | #7031 | |
 | Jonas Bilharinho | 1-1-0 REC | #5098 | |
 | Jonatan Kujawa | 0-1-0 REC | #6943 |  |
 | Jonathan Caetano | 0-1-0 REC | #5273 | |
 | Jonathan Pearce | 5-4-0 UFC | #1572 | |
 | Jonathan Powell | #7437 | | |
 | Joo Sang Yoo | 1-1-0 UFC | #2188 |  |
 | Jora Ayvazyan | 3-0-0 REC | #653 |  |
 | Jordan Barton | 1-1-0 REC | #4909 |  |
 | Jordan Bradshaw | 3-0-0 REC | #410 |  |
 | Jordan Griffin | 1-4-0 UFC | #3056 | |