Poids Plumes Hommes
 | Yaotzin Meza | 2-4-0, 1NC UFC | #3599 |  |
 | Yassin Chtatou | #3543 |  | |
 | Yazeed Hasanain | 0-2-0 REC | #5248 |  |
 | Yibugele | 0-2-0 REC | #5851 |  |
 | Yong Chul Kwon | 1-0-0 REC | #2910 |  |
 | Yoshiki Nakahara | 0-2-0 REC | #5458 |  |
 | Yoshitomi Mishima | 0-2-0 UFC | #5722 | |
 | Young Jae Song | 2-1-0 REC | #851 | |
 | Youssef Al Housani | #7327 |  | |
 | Youssef Zalal | 8-4-1 UFC | #141 |  |
 | Yudi Cahyadi | 0-1-0 REC | #5554 |  |
 | Yuele Huang | 0-1-0 REC | #5566 | |
 | Yuhei Tsuda | 1-0-0 REC | #3071 | |
 | Yui Chul Nam | 1-2-0 UFC | #4411 | |
 | Yuito Yanagawa | 0-1-0 REC | #5671 | |
 | Yuri Massacesi | #7737 |  | |
 | Yusup-Khadzhi Zubariev | 3-2-0 REC | #1569 |  |
 | Yuta Kubo | 0-2-0, 1NC REC | #3542 | |
 | Yutaka Saito | #7876 | | |
 | Yves Antibe Zanga | 0-1-0 REC | #5909 |  |