Poids Lourds Hommes
 | Jimmy Lawson | 0-1-0 REC | #5523 |  |
 | Joe Charles | 2-2-0 UFC | #3802 | |
 | Joe Pardo | 0-1-0 UFC | #6011 | |
 | Joe Son | 0-1-0 UFC | #4907 | |
 | Joffie Houlton | 3-2-0 REC | #1828 |  |
 | John Campetella | 0-1-0 UFC | #5415 | |
 | John Lopez | 0-1-0 REC | #5003 | |
 | John Marsh | 0-1-0 UFC | #5041 | |
 | John Matua | 0-1-0 UFC | #4794 | |
 | John Winter | 0-1-0 REC | #7258 |  |
 | John-Olav Einemo | 0-2-0 UFC | #3873 |  |
 | Johnny Rhodes | 2-1-0 UFC | #3929 | |
 | Jon Cunningham | 0-1-0 REC | #7230 | |
 | Jon Hess | 1-0-0 UFC | #5277 | |
 | Jon Jones | 22-1-0, 1NC UFC | #8 | |
 | Jon Madsen | 4-1-0 UFC | #2829 | |
 | Jonathan Wiezorek | 1-0-0 UFC | #6466 | |
 | Jordan Heiderman | 1-2-0 REC | #4989 | |
 | Jordan Johnson | 4-0-0 UFC | #2131 | |
 | Jose Augusto | 4-3-0 REC | #2149 |  |