Poids Plumes Hommes
 | Kaleio Romero | 0-1-0 REC | #6942 |  |
 | Kaleo Meheula | #7489 | | |
 | Kallum Parker | 1-4-0 REC | #4136 |  |
 | Kamal Mamedov | 0-2-0 REC | #3716 |  |
 | Kangjie Zhu | #2217 |  | |
 | Karol Kutyla | 0-5-0 REC | #2935 |  |
 | Karol Rysavy | 8-7-0 REC | #348 |  |
 | Kazuki Aimoto | #7393 |  | |
 | Kazumasa Majima | 1-1-0 REC | #1260 | |
 | Keegan Witbeck | 0-1-0 REC | #7083 | |
 | Keiichiro Nakamura | 3-0-0 REC | #387 | |
 | Keisuke Sasu | 1-3-0 REC | #3333 | |
 | Keith Keogh | 3-0-0 REC | #274 |  |
 | Kenny Florian | 12-5-0 UFC | #421 | |
 | Keremuaili Maimaitituoheti | 0-1-0 REC | #6407 | |
 | Kevin Aguilar | 2-4-0 UFC | #2724 | |
 | Kevin Boehm | 0-2-0 REC | #5602 | |
 | Kevin Croom | 0-3-0, 1NC UFC | #4428 | |
 | Kevin Petshi | 0-1-0 REC | #5383 |  |
 | Kevin Rosas | #7303 | |