Poids Mouches Hommes
 | Will Campuzano | 0-4-0 UFC | #3856 |  |
 | Willie Gates | 1-3-0 UFC | #3785 |  |
 | Wilson Reis | 7-6-0 UFC | #912 |  |
 | Yannis Osmani | 0-1-0 REC | #4026 |  |
 | Yasuhiro Urushitani | 0-2-0 UFC | #5059 |  |
 | Yermakhan Oryntaev | 0-2-0 REC | #4328 |  |
 | Yntymak Glamidin | 0-1-0 REC | #6281 |  |
| Yowanis Houmadi | 0-1-0 REC | #7885 |  |
 | Yuki Ito | 5-2-0 REC | #282 | |
 | Yuki Motoya | 5-3-0 REC | #1528 | |
 | Yuma Horiuchi | 0-1-0 REC | #7276 | |
 | Yumeto Mizuno | #8083 | | |
 | Yunus Khiziev | #8049 |  | |
 | Yuri Suda | 0-1-0 REC | #6595 | |
 | Yutaro Muramoto | 0-1-0 REC | #7658 | |
 | Yuya Shibata | 0-1-0 REC | #6296 | |
 | Yve Nelson | 1-0-0 REC | #1965 | |
 | Zach Makovsky | 3-4-0 UFC | #3296 | |
 | Zarrukh Adashev | 1-3-0 UFC | #3508 |  |
 | Zelim Umarov | 1-0-0 REC | #1715 | |