Poids Plumes Hommes
 | Kevin Vallejos | 3-0-0 UFC | #375 |  |
 | Khakimzhan Davronov | 0-1-0 REC | #6010 |  |
 | Khalid Musaev | 0-1-0 REC | #5640 | |
 | Khalid Taha | 1-4-0, 1NC UFC | #1008 |  |
 | Khanzala Magomadov | 1-0-0 REC | #5708 | |
 | Khasan Magomedsharipov | 3-0-0 REC | #2246 | |
 | Khaseyn Shaykhaev | 1-0-0 REC | #5187 | |
 | Khaskil Amirkhanov | 0-1-0 REC | #6540 | |
| Khetag Morgoev | 1-0-0 REC | #1987 | |
 | Khumoyun Tukhtamuradov | #7128 |  | |
 | Khusein Askhabov | 0-1-0 UFC | #4995 | |
 | Kim Tinghaugen | 0-1-0 REC | #6807 |  |
 | Kisa Miyake | 0-1-0 REC | #5500 |  |
 | Kleber Koike Erbst | 2-3-0 REC | #1131 |  |
 | Koji Oishi | 0-2-0 UFC | #4832 | |
 | Koki Akada | 0-3-0 REC | #3239 | |
 | Konmon Deh | 0-2-0 REC | #4795 |  |
 | Konstantin Podoynitsyn | 0-1-0 REC | #5484 | |
 | Kota Miura | 0-2-0 REC | #1738 | |
 | Kouya Kanda | 1-1-0 REC | #5807 | |