Sorted alphabetically by last name · 2715 fighters
| Name | Nickname | |
|---|---|---|
| KK | Kai Kara-France | "Don't Blink" |
| KC | Kailin Curran | |
| KJ | Kajan Johnson | "Ragin'" |
| KS | Kalib Starnes | |
| KF | Kalindra Faria | |
| KS | Kamal Shalorus | "Prince of Persia" |
| KU | Kamaru Usman | "The Nigerian Nightmare" |
| KK | Kamuela Kirk | "The Jawaiian" |
| KM | Kanako Murata | |
| KG | Karine Gevorgyan | "The Princess" |