Tous les combattants
 | Katlyn Cerminara | 11-6-0 UFC | #516 |  |
 | Katsuhisa Fujii | 1-1-0 UFC | #5375 |  |
 | Katsunori Kikuno | 2-3-0 UFC | #3339 | |
 | Katsuyoshi Sasaki | 0-1-0 REC | #7055 | |
 | Kaua Fernandes | 0-1-0 REC | #7020 |  |
 | Kauan Leopoldina | 0-1-0 REC | #5831 | |
 | Kaue Fernandes | 3-1-0 UFC | #1108 | |
 | Kaue Vaz | 0-1-0 REC | #4896 | |
 | Kaushik Saikumar | 0-1-0 REC | #4661 |  |
 | Kay Hansen | 1-3-0 UFC | #3259 | |
 | Kayara Hartfield | 1-0-0 REC | #949 | |
 | Kayck Alencar | #7892 | | |
 | Kayla Harrison | 3-0-0 UFC | #8 | |
 | Kayla Yontef | 1-0-0 REC | #5416 | |
 | Kaynan Kruschewsky | 0-2-0 UFC | #3853 | |
 | Kaytlin Neil | 2-1-0 REC | #4069 | |
 | Kazakbai Tilenov | 0-1-0 REC | #6487 |  |
 | Kazbek Damaev | 0-1-0 REC | #6315 |  |
 | Kazuhiro Nakamura | 0-2-0 UFC | #4802 | |
 | Kazuki Aimoto | #7744 | | |
 | Kazuki Tokudome | 1-3-0 UFC | #3901 | |
 | Kazuma Maruyama | 0-1-0 REC | #6617 | |
 | Kazumasa Majima | 2-1-0 REC | #583 | |
 | Kazuo Takahashi | 1-0-0 UFC | #5107 | |
 | Kazushi Sakuraba | 1-0-0, 1NC UFC | #3782 | |