Sorted alphabetically by last name · 2715 fighters
| Name | Nickname | |
|---|---|---|
| JH | Johny Hendricks | "Bigg Rigg" |
| JD | Jon Delos Reyes | "The Heat" |
| JF | Jon Fitch | |
| JH | Jon Hess | |
| JJ | Jon Jones | "Bones" |
| JM | Jon Madsen | |
| JM | Jon Manley | |
| JO | Jon Olav Einemo | "The Viking" |
| JT | Jon Tuck | "Super Saiyan" |
| JB | Jonathan Brookins |