Tous les combattants
 | Jacob Thrall | 0-1-0 REC | #6354 |  |
 | Jacob Volkmann | 6-4-0 UFC | #2253 | |
 | Jacob Wiggins | 0-1-0 REC | #5367 | |
 | Jacob Yancey | 1-0-0 REC | #1990 | |
 | Jacobe Smith | 3-0-0 UFC | #923 | |
 | Jacobi Jones | 2-3-0 REC | #2753 | |
 | Jacqueline Cavalcanti | 5-1-0 UFC | #245 |  |
 | Jade Jorand | 1-1-0 REC | #1232 |  |
 | Jade Masson-Wong | 0-1-0 REC | #3816 |  |
 | Jaden Ortega | #8110 | | |
 | Jady Menezes | 2-0-0 REC | #3164 |  |
 | Jae Hoon Lee | 0-1-0 REC | #7153 |  |
 | Jae Hyun Park | 1-2-0 REC | #2798 | |
 | Jaeleen Robledo | 1-0-0 REC | #3276 | |
 | Jafel Filho | 3-3-0 UFC | #1395 | |
 | Jai Herbert | 4-5-1 UFC | #670 |  |
 | Jaida Harshman | 0-1-0 REC | #6379 | |
 | Jailton Almeida | 8-3-0 UFC | #456 | |
 | Jaime Alvarez | 1-0-0 REC | #6412 | |
 | Jaime Lloyd | 1-0-0 REC | #2568 | |
 | Jaime Mora-Munoz | 0-1-0 REC | #7804 | |
 | Jaimee Nievera | 0-1-0 REC | #5558 | |
 | Jainer Ruiz-Jimenez | 0-1-0 REC | #6068 |  |
 | Jair de Oliveira | 0-1-0 REC | #5329 | |
 | Jair Farias | 0-1-0 REC | #7303 | |