Combattants Etats-Unis
| 1001 |  | Isaiah Arechiga | 0-1-0 REC | #7154 |  |
| 1002 |  | Isaiah Diggs | 0-1-0 REC | #6354 | |
| 1003 |  | Isaiah Figueroa | 0-1-0 REC | #7617 | |
| 1004 |  | Isaiah Flores | 0-1-0 REC | #7481 | |
| 1005 |  | Isaiah Hokit | 2-0-0 REC | #4395 | |
| 1006 |  | Isaiah Joans | 0-1-0 REC | #7357 | |
| 1007 |  | Isaiah Mahto | #8022 | | |
| 1008 |  | Isaiah Pinson | 3-3-0 REC | #2304 | |
| 1009 |  | Isaiah Skidmore | 0-1-0 REC | #6285 | |
| 1010 |  | Isaiah Watkins | 1-0-0 REC | #1061 | |
| 1011 |  | Isiah Torres | 1-0-0 REC | #7089 | |
| 1012 |  | Israel Aquino | 0-1-0 REC | #6671 | |
| 1013 |  | Israel Delgado | 1-1-0 REC | #6048 | |
| 1014 |  | Issouf Doumbia | 0-1-0 REC | #6139 | |
| 1015 |  | Ivan Salaverry | 3-4-0 UFC | #3056 | |
| 1016 |  | Ivan Tena | 0-1-0 REC | #7717 | |
| 1017 |  | J.C. Cottrell | 0-2-0 UFC | #5520 | |
| 1018 |  | J.P. Saint Louis | 1-0-0 REC | #3153 | |
| 1019 |  | Jack Congdon | 0-1-0 REC | #5199 | |
| 1020 |  | Jack Duffy | 0-1-0 REC | #5678 | |
| 1021 |  | Jack May | 0-2-0 UFC | #3941 | |
| 1022 | | Jack McLaughlin | 0-1-0 UFC | #6454 | |
| 1023 |  | Jack Nilson | 1-1-0 UFC | #5270 | |
| 1024 | | Jack Sheehan | #8074 | | |
| 1025 |  | Jack Shields | 4-3-0, 1NC UFC | #1623 | |