Tous les combattants
 | Kase Tucker | #7447 |  | |
 | Kasey Tanner | 3-1-0 REC | #1417 | |
 | Kasim Aras | 2-2-0 REC | #1307 |  |
 | Kassius Kayne | 0-1-0 REC | #7125 | |
 | Kassoum Kone | 1-0-0 REC | #1533 |  |
 | Kasum Kasumov | 2-2-0 REC | #2771 |  |
 | Katarina Legorreta | 0-1-0 REC | #5816 | |
 | Katarzyna Sadura | 0-1-0 REC | #6198 |  |
 | Kate Bacik | 3-0-0 REC | #3766 |  |
 | Kate Jackson | 0-1-0 REC | #6368 | |
 | Katharina Dalisda | 5-1-0 REC | #2689 | |
 | Katharina Lehner | 1-5-0 REC | #2166 | |
 | Katharina Rychkova | 1-0-0 REC | #1300 |  |
 | Katherine Corogenes | 0-2-0 REC | #6074 | |
 | Kathryn Paprocki | 0-1-0 REC | #6913 | |
 | Katie Perez | 0-2-0 REC | #4062 | |
 | Katie Saull | 1-3-0 REC | #3744 |  |
 | Katlyn Cerminara | 11-6-0 UFC | #485 | |
 | Katsuhisa Fujii | 1-1-0 UFC | #5184 |  |
 | Katsunori Kikuno | 2-3-0 UFC | #3109 | |
 | Katsuyoshi Sasaki | 0-1-0 REC | #6688 | |
| Kaua Fernandes | 0-1-0 REC | #6670 |  |
 | Kauan Leopoldina | 0-1-0 REC | #5333 | |
 | Kaue Fernandes | 3-1-0 UFC | #867 | |
 | Kaue Vaz | 0-1-0 REC | #4465 | |