Tous les combattants
 | Khetag Sabeev | #7670 |  | |
| Khizir Magomadov | 1-0-0 REC | #7997 | |
 | Kholmurod Nurmatov | 1-4-0 REC | #1808 |  |
 | Khumoyun Tukhtamuradov | #7293 | | |
 | Khurshed Kakhorov | 4-1-0 REC | #2905 |  |
 | Khusein Askhabov | 0-1-0 UFC | #5360 | |
 | Khuseyn Tatalaev | 0-1-0 REC | #6953 | |
 | Kibedy Gordon | 1-0-0 REC | #5057 |  |
 | Kiefer Crosbie | 0-3-0 UFC | #2703 |  |
 | Kiichi Kunimoto | 3-2-0 UFC | #3355 |  |
 | Kikadze Bondo | 1-0-0 REC | #6049 |  |
| Killian Layour | 0-1-0 REC | #7595 |  |
 | Killys Mota | 3-1-0 REC | #3553 |  |
 | Kim Tinghaugen | 0-1-0 REC | #6977 |  |
 | Kim Tran | #7866 |  | |
 | Kimbert Alintozon | 0-1-0 REC | #6273 |  |
 | Kimo Leopoldo | 2-4-0 UFC | #2691 |  |
 | King Green | 16-12-1, 1NC UFC | #82 | |
 | King Rikuto | #7675 | | |
 | Kinnedy Hundley | 0-1-0 REC | #5266 | |
 | Kiran Singh | 0-1-0 REC | #5379 |  |
 | Kirill Grishenko | 1-0-0 REC | #1937 |  |
 | Kirill Kornilov | 4-2-0 REC | #952 | |
 | Kirill Kudaktin | 0-1-0 REC | #5620 | |
 | Kirill Medvedovski | 0-1-0 REC | #7253 |  |