Poids Plumes Hommes
 | Icaro Brito | 1-1-0 REC | #4215 |  |
 | Ignacio Campos | 0-1-0 REC | #4881 |  |
 | Ikror Urinbaev | 0-1-0 REC | #5379 |  |
 | Ilie Meryacre | 0-1-0 REC | #6533 |  |
 | Inglesson de Lara | 1-2-0 REC | #4040 | |
 | Isaac Dulgarian | 2-2-0 UFC | #2009 |  |
 | Isaac Omeda | 0-0-1 REC | #5736 |  |
 | Isaac Thomson | 0-1-0 UFC | #833 |  |
 | Isai Ramos | 1-1-0 REC | #4364 |  |
 | Isaiah Arechiga | 0-1-0 REC | #6408 | |
 | Isaiah Diggs | 0-1-0 REC | #5368 | |
 | Isaiah Hokit | 2-0-0 REC | #4097 | |
| Isame Ennani | 1-0-0 REC | #7332 |  |
 | Isao Kobayashi | 0-1-0 REC | #6124 |  |
 | Islam Babatov | 0-1-0 REC | #5289 |  |
| Islam Edaev | #7200 | | |
 | Islam Isaev | 1-0-0 REC | #1577 | |
 | Islam Meshev | 0-2-0 REC | #3772 | |
 | Islam Omarov | 2-0-0 REC | #809 | |
 | Islam Reda | 5-0-0 REC | #525 |  |