';
| Fighter | Nickname | Height | Weight | Association | |
| A.J. Lavarias | 5'6" (1.68 m) |
155 lbs (70.31 kg) |
Systems Training Center | ||
| A.J. Pedro Washio | 0'0" (0 m) |
125 lbs (56.7 kg) |
All Out Training | ||
| Aaron Romero | 6'0" (1.83 m) |
161 lbs (73.03 kg) |
Grudge Training Center | ||
| Aaron Fondry | 0'0" (0 m) |
170 lbs (77.11 kg) |
Atlas Training Systems | ||
| Aaron Hughes | "Short Fuse" | 5'9" (1.75 m) |
155 lbs (70.31 kg) |
Regiment Training Center | |
| Aaron Fahr | 0'0" (0 m) |
135 lbs (61.23 kg) |
Wolves' Den Training Center | ||
| Abdallah Habib | 0'0" (0 m) |
170 lbs (77.11 kg) |
Allstars Training Center | ||
| Abdelilah Azzouzi | 6'4" (1.93 m) |
205 lbs (92.99 kg) |
Elite Training Center | ||
| Abdou Aziz Sakho | "2 Giga" | 6'6" (1.98 m) |
185 lbs (83.91 kg) |
Werdum Training Center Bordeaux | |
| Abdul Rahim Naderi | "The Lycanthrope" | 0'0" (0 m) |
135 lbs (61.23 kg) |
Eagle Top Team Training Camp | |
| Abdul Waris Mohammadi | "The Lion" | 5'6" (1.68 m) |
125 lbs (56.7 kg) |
Eagle Top Team Training Camp | |
| Abdulah Teymouri | 0'0" (0 m) |
124 lbs (56.25 kg) |
Headrush Training Centre | ||
| Abdulbasir Vagabov | "Dagestan Machine" | 6'1" (1.85 m) |
242 lbs (109.77 kg) |
Allstars Training Center | |
| Abel Trujillo | "Killa" | 5'8" (1.73 m) |
155 lbs (70.31 kg) |
Blackzilians / Jaco Hybrid Training Center | |
| Abel Hernandez | 5'11" (1.8 m) |
185 lbs (83.91 kg) |
Midwest Training Center | ||
| Abraham Tellez | "A.T." | 5'11" (1.8 m) |
185 lbs (83.91 kg) |
Eric Nolan's Xtreme Training Center | |
| Abraham Yamil Gregorio | "Rodtang" | 5'2" (1.57 m) |
115 lbs (52.16 kg) |
Elite Training Academy | |
| Abrahim Yoser Alkanass | "The Sniper" | 6'0" (1.83 m) |
135 lbs (61.23 kg) |
Wolves' Den Training Center | |
| Adailson Silva | "Martelo" | 5'5" (1.65 m) |
135 lbs (61.23 kg) |
Imperio Training Center | |
| Adam Maciejewski | "Maja" | 6'1" (1.85 m) |
251 lbs (113.85 kg) |
Midwest Training Center | |