Poids Légers Hommes
 | Kevin Syler | 1-1-0 REC | #5343 |  |
 | Khabib Nurmagomedov | 13-0-0 UFC | #96 |  |
 | Khairulla Khaitullaev | 0-1-0 REC | #5755 | |
 | Khama Worthy | 2-3-0 UFC | #3268 |  |
 | Khamzat Salakhanov | 0-1-0 REC | #5965 | |
 | Khasu Khazaev | 1-0-0 REC | #2112 | |
 | Khumoyun Tukhtamuradov | #7239 |  | |
 | Killian Layour | 0-1-0 REC | #7499 |  |
 | Killys Mota | 3-1-0 REC | #3522 |  |
 | Kirill Kudaktin | 0-1-0 REC | #5493 |  |
 | Kody Steele | 1-1-0 UFC | #335 | |
 | Kohl Laren | 0-3-0 REC | #3063 | |
 | Koji Takeda | 2-2-0 REC | #1374 |  |
 | Kolton Englund | 0-2-0 REC | #3994 | |
 | Konrad Dyrschka | 3-0-0 REC | #2020 |  |
 | Konstantinos Ntelis | 3-1-0 REC | #761 |  |
 | Korey Taylor | 0-1-0 REC | #5047 |  |
 | Korey Windham | 0-1-0 REC | #7077 | |
 | Kousuke Sugimura | 1-0-0 REC | #2496 | |
 | Kristians Boguzs | 1-0-0 REC | #1122 |  |