Poids Mouches Hommes
 | Walter Saragosa | 0-1-0 REC | #7883 |  |
 | Wataru Yamauchi | 0-2-0 REC | #4397 |  |
 | Wendrio Chaves | 1-0-0 REC | #946 |  |
 | Werick Douglas | 0-1-0 REC | #7235 | |
 | Will Campuzano | 0-4-0 UFC | #3933 |  |
 | Willie Gates | 1-3-0 UFC | #3837 | |
 | Wilson Reis | 7-6-0 UFC | #900 | |
 | Yannis Osmani | 0-1-0 REC | #4100 |  |
 | Yasuhiro Urushitani | 0-2-0 UFC | #5109 | |
 | Yermakhan Oryntaev | 0-2-0 REC | #4458 |  |
 | Yntymak Glamidin | 0-1-0 REC | #6335 |  |
| Yowanis Houmadi | 0-1-0 REC | #7947 |  |
 | Yuki Ito | 5-2-0 REC | #378 | |
 | Yuki Motoya | 5-3-0 REC | #1603 | |
 | Yuma Horiuchi | 0-1-0 REC | #7361 | |
 | Yumeto Mizuno | #8164 | | |
 | Yunus Khiziev | #8116 |  | |
 | Yuri Suda | 0-1-0 REC | #6652 | |
 | Yutaro Muramoto | 0-1-0 REC | #7760 | |
 | Yuya Shibata | 0-1-0 REC | #6456 | |