| AAC | Airborne Aircraft Controller |
|---|---|
| AAN | Airborne Aircraft Controller |
| ABS | Automatic Brightness Stabilization controller (skr.) |
| ADC | Air Direction Controller |
| ALCAIDE | španielsky tenista (Guillermo, *1986) |
| AMOR | bývalý španielsky futbalista (Guillermo, *1967) |
| ASR | Accredited Seller Agency |
| ATM | Automated Teller Machine, bankomat (skr.) |
| CAMBODUNUM | starorímske mesto pri rieke Iller |
| CAŇAS | argentínsky tenista (Guillermo, *1977) |