Sorted alphabetically by last name · 2769 fighters
| Name | Nickname | |
|---|---|---|
| KR | Karol Rosa | |
| KK | Karolina Kowalkiewicz | |
| KC | Katlyn Cerminara | "Blonde Fighter" |
| KF | Katsuhisa Fujii | "Shamoji" |
| KK | Katsunori Kikuno | |
| KF | Kaue Fernandes | |
| KH | Kay Hansen | |
| KH |
| KK | Kaynan Kruschewsky | "Bahia" |
| KN | Kazuhiro Nakamura | "Kaz" |