Poids Légers Hommes
 | Ilyaz Mamadaliyev | #6568 |  | |
 | Imam Vitakhanov | 2-2-0 REC | #1697 |  |
 | Ioan Harris | 1-3-0 REC | #2841 |  |
 | Iras Khizriev | 1-0-0 REC | #1757 |  |
 | Iraskha Khizriev | #7256 | | |
 | Isaiah Figueroa | 0-1-0 REC | #6876 |  |
 | Isaiah Flores | 0-1-0 REC | #6910 | |
 | Isaiah Joans | 0-1-0 REC | #6588 | |
 | Isaiah Mahto | #7340 | | |
 | Islam Aguev | 1-1-0 REC | #755 | |
 | Islam Isaev | 0-2-0 REC | #3703 | |
 | Islam Mamedov | 6-1-1 REC | #1940 | |
 | Ismael Bonfim | 2-3-0 UFC | #788 |  |
 | Israel Delgado | 1-1-0 REC | #5424 | |
 | Issa Isakov | 0-1-0 REC | #4617 |  |
 | Italo Cruz | 2-0-0 REC | #587 | |
 | Italo Julio | 0-1-0 REC | #6821 | |
 | Ivan Buchinger | 8-3-0 REC | #600 |  |
 | Ivan Klevets | 1-2-0 REC | #1737 |  |
 | J.C. Cottrell | 0-2-0 UFC | #4959 | |