Poids Plumes Hommes
 | Ignacio Campos | 2-1-0 REC | #615 |  |
 | Ikror Urinbaev | 0-1-0 REC | #5975 |  |
 | Ilias Bulaid | #8198 |  | |
 | Ilie Meryacre | 0-1-0 REC | #6511 |  |
 | Inglesson de Lara | 1-2-0 REC | #3726 |  |
 | Isaac Dulgarian | 2-2-0 UFC | #2574 |  |
 | Isaac Omeda | 0-0-1 REC | #6482 |  |
 | Isaac Thomson | 0-1-0 UFC | #1393 |  |
 | Isai Ramos | 1-1-0 REC | #4641 |  |
 | Isaiah Arechiga | 0-1-0 REC | #7070 | |
 | Isaiah Diggs | 0-1-0 REC | #6274 | |
 | Isaiah Hokit | 2-0-0 REC | #4370 | |
| Isame Ennani | 1-0-0 REC | #7854 |  |
 | Islam Babatov | 0-1-0 REC | #5952 |  |
| Islam Edaev | #7805 | | |
 | Islam Isaev | 1-0-0 REC | #2505 | |
 | Islam Meshev | 0-2-0 REC | #4397 | |
 | Islam Omarov | 2-0-0 REC | #1836 | |
 | Islam Reda | 5-0-0 REC | #1223 |  |
 | Islam Taisumov | 1-1-0 REC | #1390 | |