Tous les combattants
 | Xavier Vines | 2-2-0 REC | #4122 |  |
 | Xavier Zeruth | #7995 | | |
 | Xiao Long | 1-4-0 UFC | #1543 |  |
 | Xiaocan Feng | 0-1-0 UFC | #2764 | |
 | Xiomara Piriz | 0-1-0 REC | #5992 |  |
 | Xiong Jingnan | 0-2-0 UFC | #2774 | |
 | Yabna N'Tchala | 3-2-0 REC | #1734 |  |
 | Yacine Haddad | 1-1-0 REC | #4782 |  |
 | Yadier DelValle | 3-1-0 UFC | #507 |  |
 | Yadwinder Singh | 0-1-0 REC | #6691 |  |
 | Yahaya Yahuza | 0-1-0 REC | #6120 |  |
 | Yair Rodriguez | 11-4-0, 1NC UFC | #257 |  |
 | Yakub Bersanukaev | 1-0-1 REC | #3170 |  |
 | Yakub Kediev | 2-0-0 REC | #2034 | |
 | Yakub Sulimanov | #7175 | | |
 | Yakup Ataev | 0-1-0 REC | #6531 | |
 | Yamato Nishikawa | 0-3-0 REC | #4476 |  |
 | Yan Cabral | 2-3-0 UFC | #3550 |  |
 | Yan Xiaonan | 9-5-0 UFC | #227 | |
 | Yana Gadelha | 0-1-0 REC | #6949 | |
 | Yana Santos | 7-5-0 UFC | #212 | |
 | Yanal Ashmouz | 2-2-0 UFC | #1896 |  |
 | Yanan Wu | 1-5-0 UFC | #3272 | |
 | Yancy Medeiros | 6-8-0, 1NC UFC | #1553 | |
 | Yanis Bekhtaoui | 1-1-0 REC | #7511 | |