Poids Plumes Hommes
 | Khalid Musaev | 0-1-0 REC | #5793 |  |
 | Khalid Taha | 1-4-0, 1NC UFC | #1279 |  |
 | Khanzala Magomadov | 1-0-0 REC | #5900 | |
 | Khasan Magomedsharipov | 3-0-0 REC | #2372 | |
 | Khaseyn Shaykhaev | 1-0-0 REC | #5352 | |
 | Khaskil Amirkhanov | 0-1-0 REC | #6742 | |
| Khetag Morgoev | 1-0-0 REC | #2290 | |
 | Khusein Askhabov | 0-1-0 UFC | #5152 | |
 | Kim Tinghaugen | 0-1-0 REC | #6983 |  |
 | Kisa Miyake | 0-1-0 REC | #5548 |  |
 | Kleber Koike Erbst | 2-3-0 REC | #1442 |  |
 | Koji Oishi | 0-2-0 UFC | #5031 | |
 | Koki Akada | 0-3-0 REC | #3463 | |
 | Konmon Deh | 0-2-0 REC | #4981 |  |
 | Konstantin Podoynitsyn | 0-1-0 REC | #5769 | |
 | Kota Miura | 0-2-0 REC | #1936 | |
 | Kouki Nakagawa | #7686 | | |
 | Kouya Kanda | 1-1-0 REC | #6011 | |
 | Koyomi Matsushima | 1-1-0 REC | #5945 | |
 | Kron Gracie | 1-3-0 UFC | #2386 | |