Poids Plumes Hommes
 | Isaac Omeda | 0-0-1 REC | #5966 |  |
 | Isaac Thomson | 0-1-0 UFC | #1093 |  |
 | Isai Ramos | 1-1-0 REC | #4479 |  |
 | Isaiah Arechiga | 0-1-0 REC | #6687 |  |
 | Isaiah Diggs | 0-1-0 REC | #5690 | |
 | Isaiah Hokit | 2-0-0 REC | #4137 | |
 | Isame Ennani | 1-0-0 REC | #7502 |  |
 | Isao Kobayashi | 0-1-0 REC | #6398 |  |
 | Islam Babatov | 0-1-0 REC | #5614 |  |
| Islam Edaev | #7415 | | |
 | Islam Isaev | 1-0-0 REC | #1924 | |
 | Islam Meshev | 0-2-0 REC | #4019 | |
 | Islam Omarov | 2-0-0 REC | #1189 | |
 | Islam Reda | 5-0-0 REC | #818 |  |
 | Islam Taisumov | 1-1-0 REC | #655 | |
 | Ismail Kelemetov | 1-0-0 REC | #6017 | |
 | Issei Tamura | 1-2-0 UFC | #4113 | |
 | Itay Tratner | 0-1-0 REC | #6877 |  |
 | Ivan Tena | 0-1-0 REC | #7230 | |
 | Izzeddine Al Derbani | 0-1-0 REC | #4452 |  |