Poids Moyens Hommes
 | Julian Marquez | 3-5-0 UFC | #1974 |  |
 | Julien Leblanc | 0-1-0 UFC | #2887 |  |
 | Julio Spadaccini | 1-0-0 REC | #1600 |  |
 | Jun Yong Park | 9-4-0 UFC | #593 |  |
 | Junior Orgulho | 0-1-0 REC | #7104 | |
 | Justin Barry | 0-1-0 REC | #6462 | |
 | Justin Detzel | 1-0-0 REC | #841 |  |
 | Justin Levens | 0-2-0 UFC | #5597 | |
 | Kacper Fratczak | 1-0-0 REC | #1096 |  |
 | Kacper Karski | 0-1-0 REC | #7162 | |
 | Kacper Pakeltys | 1-0-0 REC | #2147 | |
 | Kailan Hill | 0-1-0 REC | #6308 |  |
 | Kamil Oniszczuk | 2-3-0 REC | #1257 | |
 | Kamil Wojciechowski | 0-2-0 REC | #5943 | |
 | Karl Roberson | 4-6-0 UFC | #2124 | |
 | Kazuhiro Nakamura | 0-2-0 UFC | #4852 |  |
 | KB Bhullar | 0-2-0 UFC | #5280 | |
 | Keiichiro Yamamiya | 0-1-0 UFC | #7098 | |
 | Keith Jardine | 6-7-0 UFC | #1682 | |
 | Keith Rockel | 1-1-0 UFC | #5494 | |