| Abbreviation | Definition |
|---|---|
| AS | Alexander Schleicher |
| AS | Antonio Stradivari, violin maker |
| ASD | Albert S. Davis, County Commissioner in Florida |
| ASH | Anthony Stewart Head |
| ASM | Amazing Spider Man |
| ASR | Arnav Singh Raizada |
| ATG | Alexander The Great |
| ATG | Alfred The Great, King of Wessex |
| ATZ | Professor Alan T. Zehnder, Texas A & M |
| AU | Arthur Upfield |
| AUBO | Abraham Bosse, artist |
| AVD | Anthonie Van Diemenstam |
| AVM | Alfredo Verga Milano |
| AW | Andrew Webster |
| AW | Archbishop Wood |
| AW | Arlen Williams, newspaper columnist |
| B | Bozo |
| BA | Benedict Arnold |
| BA | Bryan Amyot, Director |
| BAC | Brandon Augustus Caesar |