Combattants Etats-Unis
| 1001 |  | Isaiah Arechiga | 0-1-0 REC | #7070 |  |
| 1002 |  | Isaiah Diggs | 0-1-0 REC | #6274 | |
| 1003 |  | Isaiah Figueroa | 0-1-0 REC | #7609 | |
| 1004 |  | Isaiah Flores | 0-1-0 REC | #7482 | |
| 1005 |  | Isaiah Hokit | 2-0-0 REC | #4370 | |
| 1006 |  | Isaiah Joans | 0-1-0 REC | #7326 | |
| 1007 |  | Isaiah Mahto | #8016 | | |
| 1008 |  | Isaiah Pinson | 3-3-0 REC | #2267 | |
| 1009 |  | Isaiah Skidmore | 0-1-0 REC | #6288 | |
| 1010 |  | Isaiah Watkins | 1-0-0 REC | #955 | |
| 1011 |  | Isiah Torres | 1-0-0 REC | #7042 | |
| 1012 |  | Israel Aquino | 0-1-0 REC | #6506 | |
| 1013 |  | Israel Delgado | 1-1-0 REC | #5967 | |
| 1014 |  | Issouf Doumbia | 0-1-0 REC | #6134 | |
| 1015 |  | Ivan Salaverry | 3-4-0 UFC | #3052 | |
| 1016 |  | Ivan Tena | 0-1-0 REC | #7691 | |
| 1017 |  | J.C. Cottrell | 0-2-0 UFC | #5492 | |
| 1018 |  | J.P. Saint Louis | 1-0-0 REC | #3074 | |
| 1019 |  | Jack Congdon | 0-1-0 REC | #5125 | |
| 1020 |  | Jack Duffy | 0-1-0 REC | #5602 | |
| 1021 |  | Jack May | 0-2-0 UFC | #3937 | |
| 1022 | | Jack McLaughlin | 0-1-0 UFC | #6366 | |
| 1023 |  | Jack Nilson | 1-1-0 UFC | #5244 | |
| 1024 | | Jack Sheehan | #8048 | | |
| 1025 |  | Jack Shields | 4-3-0, 1NC UFC | #1644 | |