| First | Last | Nickname | Ht. | Wt. | Reach | Stance | W | L | D | Belt |
|---|---|---|---|---|---|---|---|---|---|---|
| Rico | Altamirano | 5' 10" | 170 lbs. | -- | 4 | 3 | 0 | |||
| Victor | Altamirano | El Magnifico | 5' 8" | 125 lbs. | 70.0" | Switch | 12 | 5 | 0 | |
| Mike | Altman | 5' 10" | 185 lbs. | -- | Orthodox | 1 | 4 | 0 | ||
| Patricia | Alujas | The Angel | 5' 4" | 115 lbs. | 64.0" | Orthodox | 9 | 3 | 0 | |
| Sean | Alvarez | 6' 0" | 235 lbs. | -- | Orthodox | 4 | 3 | 0 | ||
| Eddie | Alvarez | 5' 9" | 155 lbs. | 69.0" | Orthodox | 29 | 6 | 0 | ||
| Jaime | Alvarez | 5' 8" | 125 lbs. | 69.0" | Orthodox | 6 | 1 | 0 | ||
| Joel | Alvarez | El Fenomeno | 6' 3" | 155 lbs. | 77.0" | Orthodox | 21 | 3 | 0 | |
| Thiago | Alves | Pitbull | 5' 9" | 170 lbs. | 70.0" | Orthodox | 23 | 15 | 0 | |
| Anthony | Alves | -- | -- | -- | 1 | 4 | 0 | |||
| Amilcar | Alves | 6' 0" | 170 lbs. | -- | Southpaw | 15 | 12 | 0 | ||
| Warlley | Alves | 5' 11" | 185 lbs. | 72.0" | Orthodox | 15 | 8 | 0 | ||
| Rafael | Alves | The Turn | 5' 8" | 155 lbs. | 68.0" | Orthodox | 20 | 12 | 0 | |
| Sam | Alvey | Smile'N | 6' 2" | 185 lbs. | 75.0" | Southpaw | 33 | 18 | 1 | |
| Andre | Amado | Dida | 6' 0" | 154 lbs. | -- | Orthodox | 6 | 4 | 1 | |
| Adlan | Amagov | Borz | 6' 2" | 170 lbs. | 76.0" | Orthodox | 14 | 2 | 1 | |
| Maiara | Amanajas dos Santos | 5' 5" | 115 lbs. | -- | Southpaw | 7 | 3 | 0 | ||
| Chris | Amarante | -- | 185 lbs. | -- | 2 | 0 | 0 | |||
| Jimmy | Ambriz | The Titan | 6' 2" | 315 lbs. | -- | Southpaw | 17 | 21 | 1 | |
| JJ | Ambrose | 5' 10" | 170 lbs. | -- | Orthodox | 28 | 7 | 0 | ||
| Alen | Amedovski | 5' 10" | 185 lbs. | 74.0" | Orthodox | 8 | 4 | 0 | ||
| Hyder | Amil | The Hurricane | 5' 9" | 145 lbs. | 70.0" | Switch | 10 | 0 | 0 | |
| Hamid | Amiri | The Storm | -- | 145 lbs. | -- | 9 | 0 | 0 | ||
| Makwan | Amirkhani | Mr. Finland | 5' 10" | 145 lbs. | 72.0" | Southpaw | 17 | 9 | 0 |