Poids Légers Hommes
 | Islam Aguev | 1-1-0 REC | #1123 |  |
 | Islam Isaev | 0-2-0 REC | #3857 | |
 | Islam Mamedov | 6-1-1 REC | #2027 | |
 | Ismael Bonfim | 2-3-0 UFC | #907 |  |
 | Israel Delgado | 1-1-0 REC | #5439 |  |
 | Issa Isakov | 0-1-0 REC | #4600 |  |
 | Italo Cruz | 2-1-0 REC | #859 | |
 | Italo Julio | 0-1-0 REC | #7080 | |
 | Italo Ribeiro | 0-2-0 REC | #5495 | |
 | Ivan Buchinger | 8-3-0 REC | #773 |  |
 | Ivan Klevets | 1-2-0 REC | #1995 |  |
 | J.C. Cottrell | 0-2-0 UFC | #5190 | |
 | Jaad Sekkal | 1-0-0 REC | #1664 |  |
 | Jack Becker | 0-1-0 REC | #4673 |  |
 | Jack Sheehan | #7788 | | |
 | Jacob Bohn | 0-1-0 REC | #6855 | |
| Jacob Hill | 0-1-0 REC | #6539 | |
 | Jacob Rosales | 1-3-0 REC | #2191 | |
 | Jacobi Jones | 2-3-0 REC | #2426 | |
 | Jae Hyun Park | 1-2-0 REC | #2278 |  |