Combattants Etats-Unis
| 1001 |  | Ike Villanueva | 1-5-0 UFC | #3571 |  |
| 1002 |  | Ilias Faquiri | #7896 | | |
| 1003 |  | Ilima-Lei Macfarlane | 2-2-0 REC | #4803 | |
| 1004 |  | Impa Kasanganay | 2-2-0 UFC | #263 | |
| 1005 |  | Isaac Dulgarian | 2-2-0 UFC | #2691 | |
| 1006 |  | Isaac Moreno | 1-0-0 REC | #1328 | |
| 1007 |  | Isaac Vallie-Flagg | 1-3-0 UFC | #4463 | |
| 1008 |  | Isaiah Arechiga | 0-1-0 REC | #7270 | |
| 1009 |  | Isaiah Diggs | 0-1-0 REC | #6418 | |
| 1010 |  | Isaiah Figueroa | 0-1-0 REC | #7710 | |
| 1011 |  | Isaiah Flores | 0-1-0 REC | #7579 | |
| 1012 |  | Isaiah Hokit | 2-0-0 REC | #4540 | |
| 1013 |  | Isaiah Joans | 0-1-0 REC | #7477 | |
| 1014 |  | Isaiah Mahto | #8119 | | |
| 1015 |  | Isaiah Pinson | 3-3-0 REC | #2430 | |
| 1016 |  | Isaiah Skidmore | 0-1-0 REC | #6399 | |
| 1017 |  | Isaiah Watkins | 1-0-0 REC | #1289 | |
| 1018 |  | Isiah Torres | 1-0-0 REC | #7282 | |
| 1019 |  | Israel Aquino | 0-1-0 REC | #6780 | |
| 1020 |  | Israel Delgado | 1-1-0 REC | #6275 | |
| 1021 |  | Issouf Doumbia | 0-1-0 REC | #6314 | |
| 1022 |  | Ivan Salaverry | 3-4-0 UFC | #3086 | |
| 1023 |  | Ivan Tena | 0-1-0 REC | #7845 | |
| 1024 |  | J.C. Cottrell | 0-2-0 UFC | #5699 | |
| 1025 |  | J.P. Saint Louis | 1-0-0 REC | #3274 | |