| Fighter | Nickname | Height | Weight | Association | |
 |
Josh Smith | "That Guy" | 5'8" (1.73 m) |
125 lbs (56.7 kg) |
American Top Team |
|
Joshua Silveira | "Coninha" | 6'1" (1.85 m) |
205 lbs (92.99 kg) |
American Top Team |
|
Juan Puerta | "Leadfeather" | 5'8" (1.73 m) |
136 lbs (61.69 kg) |
American Top Team Atlanta |
|
Juan Espino | "El Guapo" | 6'4" (1.93 m) |
257 lbs (116.57 kg) |
American Top Team / Jet Canarias |
|
Juan Rodriguez | "Juanky" | 0'0" (0 m) |
155 lbs (70.31 kg) |
American Top Team Black Boxx |
|
Jude Paulemon | "Clubber Creed" | 0'0" (0 m) |
170 lbs (77.11 kg) |
American Top Team Whitestone |
|
Julija Pajic | 6'0" (1.83 m) |
155 lbs (70.31 kg) |
Team MMA Spirit / American Top Team Zagreb | |
|
Junior dos Santos | "Cigano" | 6'4" (1.93 m) |
250 lbs (113.4 kg) |
Champion Team / Nordeste Jiu-Jitsu / American Top Team |
|
Juntaro Ushiku | "Fighting Bull" | 5'7" (1.7 m) |
134 lbs (60.78 kg) |
American Top Team |
|
Jussier Formiga | 5'5" (1.65 m) |
125 lbs (56.7 kg) |
American Top Team | |
|
Justin Anderson | 5'9" (1.75 m) |
170 lbs (77.11 kg) |
American Top Team Longwood | |
|
Justin Smith | "Baconator" | 5'11" (1.8 m) |
155 lbs (70.31 kg) |
American Top Team OKC |
|
Kaia Lola | "The Golden Girl" | 5'5" (1.65 m) |
125 lbs (56.7 kg) |
American Top Team Atlanta |
|
Karlo Smodila | 0'0" (0 m) |
170 lbs (77.11 kg) |
American Top Team Zagreb | |
|
Karolina Kowalkiewicz | 5'3" (1.6 m) |
116 lbs (52.62 kg) |
American Top Team | |
|
Katie Ross Scharmer | 5'4" (1.63 m) |
125 lbs (56.7 kg) |
American Top Team Savage | |
|
Kayla Harrison | 5'8" (1.73 m) |
135 lbs (61.23 kg) |
American Top Team | |
|
Kayla Hracho | "K-Rock" | 5'2" (1.57 m) |
106 lbs (48.08 kg) |
American Top Team |
|
Keanu Tomey | 5'4" (1.63 m) |
115 lbs (52.16 kg) |
American Top Team Winter Springs | |
|
Kemmyelle Haley | 5'11" (1.8 m) |
170 lbs (77.11 kg) |
American Top Team OKC | |
