Poids Mouches Hommes
 | Kai Yoshida | 0-1-0 REC | #4926 |  |
 | Kaito Oda | 0-1-0 REC | #6045 | |
 | Kanean Catron | 1-0-0 REC | #1065 |  |
 | Kayck Alencar | #7892 |  | |
 | Kendrick Latchman | 0-1-0 REC | #6336 | |
 | Kentaro Tomita | #7962 | | |
 | Kevin Borjas | 1-4-0 UFC | #1488 |  |
 | Kevin Fernandez | 3-0-0 REC | #3648 | |
 | Keynan Davis | 1-2-0 REC | #5041 | |
 | Khamzat Ilyasov | 1-1-0 REC | #2775 |  |
 | Khavid Dakaev | 2-0-0 REC | #1563 | |
 | King Rikuto | #7659 | | |
 | Kiru Sahota | 0-1-0 UFC | #2876 |  |
 | Kleberson Sousa | 0-1-0 REC | #6583 | |
 | Kurban Khatataev | 1-0-0 REC | #1718 | |
 | Kyle Estrada | 0-1-0 REC | #6037 | |
 | Kyohei Takagi | 1-0-0 REC | #1012 | |
 | Kyoji Horiguchi | 9-1-0 UFC | #82 | |
 | Leonardo de Oliveira | 0-3-0 REC | #4150 | |
 | Leopold Goi | 0-3-0 REC | #1136 |  |