Poids Mouches Hommes
 | Will Campuzano | 0-4-0 UFC | #3688 |  |
 | Willie Gates | 1-3-0 UFC | #3629 |  |
 | Wilson Reis | 7-6-0 UFC | #894 |  |
 | Yannis Osmani | 0-1-0 REC | #4011 |  |
 | Yasuhiro Urushitani | 0-2-0 UFC | #4996 |  |
 | Yermakhan Oryntaev | 0-2-0 REC | #4032 |  |
 | Yntymak Glamidin | 0-1-0 REC | #5865 |  |
| Yowanis Houmadi | 0-1-0 REC | #7717 |  |
 | Yuki Ito | 4-2-0 REC | #856 | |
 | Yuki Motoya | 5-3-0 REC | #1300 | |
 | Yuma Horiuchi | 0-1-0 REC | #6896 | |
 | Yumeto Mizuno | #7836 | | |
 | Yunus Khiziev | #7808 |  | |
 | Yuri Suda | 0-1-0 REC | #6321 | |
 | Yutaro Muramoto | 0-1-0 REC | #7374 | |
 | Yuya Shibata | 0-1-0 REC | #5981 | |
 | Yve Nelson | #7952 | | |
 | Zach Makovsky | 3-4-0 UFC | #3171 | |
 | Zarrukh Adashev | 1-3-0 UFC | #3420 |  |
 | Zelim Umarov | 1-0-0 REC | #1190 | |