Poids Légers Hommes
 | Kacper Formela | 2-2-0 REC | #1791 |  |
 | Kacper Fornalski | 1-2-0 REC | #3575 | |
 | Kajan Johnson | 4-3-0 UFC | #2041 |  |
 | Kamal Shalorus | 0-3-0 UFC | #2681 |  |
 | Kamuela Kirk | 1-2-0 UFC | #3897 |  |
 | Kane Mousah | 1-3-0 REC | #3791 |  |
 | Kanybek Zhanybekov | 0-2-0 REC | #4769 |  |
 | Karan Mosebach | #7606 |  | |
 | Karol Arteaga | 1-1-0 REC | #1867 |  |
 | Kase Tucker | #7875 | | |
 | Katsunori Kikuno | 2-3-0 UFC | #3400 |  |
 | Kauan Leopoldina | 0-1-0 REC | #6075 |  |
 | Kaue Fernandes | 3-1-0 UFC | #1155 | |
 | Kaynan Kruschewsky | 0-2-0 UFC | #3932 | |
 | Kazbek Damaev | 0-1-0 REC | #6499 |  |
 | Kazuki Tokudome | 1-3-0 UFC | #3950 | |
 | Kazuma Maruyama | 0-1-0 REC | #6683 | |
 | Kegan Agnew | 0-1-0 REC | #7131 | |
 | Kegan Gennrich | 2-2-0 REC | #3745 | |
 | Kelly Dullanty | 0-1-0 UFC | #5879 | |