| First | Last | Nickname | Ht. | Wt. | Reach | Stance | W | L | D | Belt |
|---|---|---|---|---|---|---|---|---|---|---|
| Gadzhimurad | Antigulov | 5' 11" | 205 lbs. | 70.0" | Orthodox | 20 | 8 | 0 | ||
| Adam | Antolin | Captain Chaos | 5' 5" | 125 lbs. | 63.0" | Orthodox | 12 | 3 | 0 | |
| Angelo | Antonio | -- | 205 lbs. | -- | Orthodox | 1 | 4 | 0 | ||
| Vanilto | Antunes | 6' 0" | 170 lbs. | 72.0" | Orthodox | 16 | 7 | 0 | ||
| Azunna | Anyanwu | Zulu | 6' 1" | 251 lbs. | -- | Orthodox | 14 | 5 | 0 | |
| Shinsho | Anzai | Animal | 5' 7" | 170 lbs. | 70.0" | Orthodox | 10 | 3 | 0 | |
| Shinya | Aoki | Tobikan Judan | 5' 11" | 154 lbs. | -- | Southpaw | 39 | 7 | 0 | |
| Aoriqileng | The Mongolian Murderer | 5' 7" | 135 lbs. | 69.0" | Orthodox | 25 | 12 | 0 | ||
| Josh | Appelt | 5' 10" | 255 lbs. | -- | Southpaw | 15 | 7 | 0 | ||
| Erik | Apple | 6' 0" | 170 lbs. | -- | Orthodox | 10 | 3 | 0 | ||
| Kenji | Arai | 5' 10" | 145 lbs. | -- | Southpaw | 15 | 15 | 5 | ||
| Romie | Aram | 5' 10" | 170 lbs. | -- | Orthodox | 7 | 1 | 0 | ||
| Felipe | Arantes | Sertanejo | 5' 8" | 135 lbs. | 73.0" | Orthodox | 18 | 10 | 1 | |
| Igor | Araujo | 6' 1" | 170 lbs. | 77.0" | Orthodox | 25 | 9 | 0 | ||
| Viviane | Araujo | Vivi | 5' 4" | 125 lbs. | 68.0" | Orthodox | 13 | 6 | 0 | |
| Julio | Arce | 5' 7" | 145 lbs. | 70.0" | Southpaw | 19 | 6 | 0 | ||
| Art | Arciniega | King Arthur | 5' 8" | 145 lbs. | -- | 15 | 7 | 0 | ||
| Alice | Ardelean | 5' 3" | 115 lbs. | 62.0" | Orthodox | 9 | 7 | 0 | ||
| Tristan | Arenal | -- | 155 lbs. | -- | 7 | 4 | 0 | |||
| Gabriel | Arges | -- | 170 lbs. | -- | 0 | 0 | 0 | |||
| Dan | Argueta | The Determined | 5' 7" | 135 lbs. | 68.0" | Southpaw | 9 | 3 | 0 | |
| Reza | Arianto | The Crazy Lion | -- | 155 lbs. | -- | 5 | 0 | 0 | ||
| Hashem | Arkhagha | 6' 2" | 185 lbs. | 75.0" | Orthodox | 6 | 1 | 0 | ||
| Andrei | Arlovski | The Pitbull | 6' 3" | 240 lbs. | 77.0" | Orthodox | 34 | 24 | 0 |