Tous les combattants
 | Kody Steele | 1-1-0 UFC | #959 |  |
 | Kohei Sugiyama | 1-0-0 REC | #1713 |  |
 | Kohl Laren | 0-3-0 REC | #3528 | |
 | Koji Kitao | 0-1-0 UFC | #5465 | |
 | Koji Oishi | 0-2-0 UFC | #5317 | |
 | Koji Takeda | 3-2-0 REC | #650 | |
 | Koki Akada | 0-4-0 REC | #3502 | |
 | Kolton Englund | 0-2-0 REC | #4542 | |
 | Konmon Deh | 0-2-0 REC | #4926 |  |
 | Konrad Dyrschka | 3-0-0 REC | #2700 |  |
 | Konrad Rusinski | 3-3-0 REC | #1165 |  |
 | Konstantin Erokhin | 0-2-0 UFC | #5102 |  |
 | Konstantin Podoynitsyn | 0-1-0 REC | #6539 | |
 | Konstantinos Ntelis | 3-1-0 REC | #1706 |  |
 | Korey Kuppe | 0-3-0 REC | #5432 | |
 | Korey Taylor | 0-1-0 REC | #5895 |  |
 | Korey Windham | 0-1-0 REC | #7402 | |
 | Kory Moegenburg | 0-2-0 REC | #5608 | |
 | Kostadin Enev | 0-1-0 REC | #8132 |  |
 | Kosuke Terashima | 0-1-0 REC | #6089 | |
 | Kota Miura | 0-2-0 REC | #2442 | |
 | Kouki Nakagawa | 1-0-0 REC | #2500 | |
 | Kousuke Kindaichi | 0-1-0 REC | #6676 | |
 | Kousuke Sugimura | 1-0-0 REC | #3297 | |
 | Kouya Kanda | 1-1-0 REC | #6359 | |