Tous les combattants
 | Katharina Rychkova | 1-0-0 REC | #2143 |  |
 | Katherine Corogenes | 0-2-0 REC | #6577 |  |
 | Kathryn Paprocki | 0-1-0 REC | #7186 | |
 | Katie Perez | 0-3-0 REC | #3551 | |
 | Katie Saull | 1-3-0 REC | #4012 |  |
 | Katlyn Cerminara | 11-6-0 UFC | #511 | |
 | Katsuhisa Fujii | 1-1-0 UFC | #5565 |  |
 | Katsunori Kikuno | 2-3-0 UFC | #3441 | |
 | Katsuyoshi Sasaki | 0-1-0 REC | #7175 | |
 | Kaua Fernandes | 0-1-0 REC | #7190 |  |
 | Kauan Leopoldina | 0-1-0 REC | #6273 | |
 | Kaue Fernandes | 3-1-0 UFC | #1082 | |
 | Kaue Vaz | 0-1-0 REC | #5169 | |
 | Kaushik Saikumar | 0-1-0 REC | #4780 |  |
 | Kay Hansen | 1-3-0 UFC | #3204 | |
 | Kayara Hartfield | 1-0-0 REC | #1348 | |
 | Kayck Alencar | 0-1-0 REC | #6286 | |
 | Kayla Harrison | 3-0-0 UFC | #8 | |
 | Kayla Yontef | 1-0-0 REC | #5594 | |
 | Kaynan Kruschewsky | 0-2-0 UFC | #3974 | |
 | Kaytlin Neil | 2-1-0 REC | #4180 | |
 | Kazakbai Tilenov | 0-1-0 REC | #6614 |  |
 | Kazbek Damaev | 0-1-0 REC | #6631 |  |
 | Kazuhiro Nakamura | 0-2-0 UFC | #4936 | |
 | Kazuki Aimoto | #7856 | |