Tous les combattants
 | Jamie Yager | 0-1-0 UFC | #5309 |  |
 | Jamshed Ganiev | 2-0-0 REC | #947 |  |
 | Jamshid Tilyaev | #7826 |  | |
 | Jan Blachowicz | 12-8-2 UFC | #66 |  |
 | Jan Cieplowski | 1-1-0 REC | #2450 | |
 | Jan Fajk | 2-1-0 REC | #4774 |  |
 | Jan Gottvald | 1-0-0 REC | #7326 | |
 | Jan Holzer | 1-0-0 REC | #977 |  |
 | Jan Malach | 4-7-0 REC | #746 | |
 | Jan Masek | 2-3-0 REC | #2026 | |
 | Jan Quaeyhaegens | 3-1-0 REC | #3774 |  |
 | Jan Siroky | 3-7-0 REC | #3196 | |
 | Jan Stanovsky | 3-2-0 REC | #809 | |
 | Janaina Silva | 0-3-0 REC | #3955 |  |
 | Janaisa Morandin | 0-2-0 REC | #4786 | |
 | Janay Harding | 0-2-0 REC | #5122 |  |
 | Janderson Barreto | 0-1-0 REC | #5234 | |
 | Jane Osigwe | 0-1-0 REC | #5357 |  |
 | Janne Elonen-Kulmala | 0-4-0 REC | #4756 |  |
 | Jansey Silva | 0-1-0 REC | #7042 | |
 | Jaqueline Amorim | 5-2-0 UFC | #358 | |
 | Jaqueline Ferreira | #7707 | | |
 | Jared Braun | 0-2-0 REC | #4209 | |
 | Jared Cannonier | 11-9-0 UFC | #208 | |
 | Jared Ferrera | 0-1-0 REC | #7111 | |