Tous les combattants
 | Jimmy Flick | 2-4-0 UFC | #2451 |  |
 | Jimmy Lawson | 0-1-0 REC | #6091 | |
 | Jimmy Meza | 0-1-0 REC | #8035 | |
 | Jimmy Quinlan | 0-1-0 UFC | #7538 | |
 | Jimmy Quinn | 3-2-0 REC | #4071 |  |
 | Jimmy Vienot | 2-1-0 REC | #351 |  |
 | Jimmy Washington | 0-1-0 REC | #6062 | |
 | Jin Aoi | 0-2-0 REC | #4264 |  |
 | Jin Soo Son | 0-2-0 UFC | #4394 |  |
 | Jin Tanaka | 1-0-0 REC | #2119 | |
 | Jin Wakita | 0-1-0 REC | #6159 | |
 | Jingliang Li | 11-7-0 UFC | #500 |  |
 | Jinh Yu Frey | 2-6-0 UFC | #2945 | |
 | Jiniushiyue | 3-2-0 REC | #1716 | |
 | Jinnosuke Kashimura | 2-3-0 REC | #1576 | |
 | Jiri Prochazka | 6-3-0 UFC | #71 |  |
 | Jivko Stoimenov | 0-1-0 REC | #7625 |  |
 | Jixie Molapo | 1-1-0 REC | #3199 | |
 | JJ Aldrich | 11-7-0 UFC | #414 | |
 | JJ Okanovich | 1-0-0 REC | #7139 | |
 | Jo Arai | 0-2-0 REC | #4852 | |
 | Joab Souza | 0-1-0 REC | #6854 |  |
 | Joachim Christensen | 1-3-0 UFC | #4072 |  |
 | Joan Arastey | 0-2-0 REC | #6658 |  |
 | Joan Rodriguez | 0-1-0 REC | #5686 | |