Poids Légers Hommes
 | Ieuan Davies | 5-0-0 REC | #1171 |  |
 | Ignacio Bahamondes | 6-4-0 UFC | #368 |  |
 | Ignacio Capella | 1-1-0 REC | #5147 |  |
 | Igor Lukacovic | 0-2-0 REC | #6971 |  |
 | Igor Olchonov | 0-3-0 REC | #3934 |  |
 | Igor Wlodarczyk | 2-0-0 REC | #1155 |  |
 | Ilay Barzilay | 4-1-0 REC | #2253 |  |
 | Iler Bakhtiyar Uulu | 2-1-0 REC | #4117 |  |
 | Ilia Topuria | 9-0-0 UFC | #7 |  |
 | Iliskhan Azhigov | 0-1-0 REC | #6311 | |
 | Ilkhom Nazimov | 2-0-0 REC | #1070 |  |
 | Ilyaz Mamadaliyev | #6133 |  | |
 | Imam Vitakhanov | 2-2-0 REC | #1952 | |
 | Ioan Harris | 1-3-0 REC | #3036 | |
 | Iras Khizriev | 1-0-0 REC | #2023 |  |
 | Iraskha Khizriev | #7435 | | |
 | Isaiah Figueroa | 0-1-0 REC | #7065 |  |
 | Isaiah Flores | 0-1-0 REC | #7149 | |
 | Isaiah Joans | 0-1-0 REC | #6854 | |
 | Isaiah Mahto | #7595 | |