Tous les combattants
 | John Allan | 0-2-0, 1NC UFC | #3452 |  |
 | John Beckett | 2-0-0 REC | #5350 |  |
 | John Caldone | 1-0-0 REC | #7118 | |
 | John Campetella | 0-1-0 UFC | #5432 | |
 | John Caseneuil | 1-2-0 REC | #3910 |  |
 | John Castaneda | 4-4-1 UFC | #1611 | |
 | John Cholish | 1-2-0 UFC | #4637 | |
 | John Cofer | 0-2-0 UFC | #5500 | |
 | John Dave Almanza | 0-1-0 REC | #5978 |  |
 | John De Jesus | 2-2-0 REC | #4716 | |
 | John Dodson | 10-7-0 UFC | #551 | |
 | John Donaldson | 0-1-0 REC | #6652 | |
 | John Dowdy | 0-1-0 UFC | #7163 | |
 | John Garza | 0-1-0 UFC | #3704 | |
 | John Gunderson | 1-2-0 UFC | #4644 | |
 | John Gunther | 1-1-0 UFC | #4655 | |
 | John Halverson | 0-2-0 UFC | #5206 | |
 | John Hathaway | 7-2-0 UFC | #1467 |  |
 | John Howard | 7-7-0 UFC | #1069 | |
 | John Kolosci | 0-1-0 UFC | #6851 | |
 | John Lewis | 1-1-0 UFC | #5312 | |
 | John Lineker | 12-4-0 UFC | #514 | |
 | John Lober | 0-1-0 UFC | #4175 | |
 | John Lopez | 0-1-0 REC | #5253 | |
 | John MaCalolooy | 0-1-0 REC | #7006 | |