Tous les combattants
 | Yi Sak Lee | 0-1-0 UFC | #3359 |  |
 | Yibugele | 0-2-0 REC | #5892 |  |
 | Yilizhati Maimaitijiang | #7924 | | |
 | Yincang Bao | 0-2-0 REC | #6554 | |
 | Ylian Belhadj | 1-0-0 REC | #7964 |  |
 | Ylies Djiroun | 3-3-0 REC | #753 | |
| Yntymak Glamidin | 0-1-0 REC | #6281 |  |
| Yoan Robert-Ramirez | 0-1-0 REC | #6449 |  |
 | Yoel Romero | 9-4-0 UFC | #314 |  |
 | Yoga Prabowo | 0-2-0 REC | #6729 |  |
 | Yohan Lainesse | 1-3-0 UFC | #2629 |  |
 | Yohan Salvador | 1-3-0 REC | #3851 | |
 | Yoislandy Izquierdo | 0-2-0 UFC | #4721 | |
 | Yoji Anjo | 0-3-0 UFC | #4593 |  |
 | Yoko Higashi | 0-3-0 REC | #5296 | |
 | Yong Chul Kwon | 1-0-0 REC | #3012 | |
 | Yoon Sung Jang | 0-1-0 REC | #5590 | |
 | Yorgan De Castro | 1-3-0 UFC | #2949 |  |
 | Yosdenis Cedeno | 1-3-0 UFC | #4134 | |
 | Yoshihiro Akiyama | 2-5-0 UFC | #2372 | |
 | Yoshiki Nakahara | 0-2-0 REC | #5578 | |
 | Yoshinori Horie | 0-1-0 UFC | #1575 | |
 | Yoshiro Maeda | 1-0-0 REC | #3620 | |
 | Yoshitomi Mishima | 0-2-0 UFC | #5790 | |
 | Yoshiyuki Yoshida | 2-3-0 UFC | #3502 | |