| AAB | Airport Advisory Board |
|---|---|
| AAC | Academic Advisory Center |
| AAS | Airport Advisory Service |
| AAS | Alert Area Supervisor |
| AC | Advisory Comittee, poradný výbor (angl.skr.) |
| ATC | Argentina Televisora Color, argentínska štátna televízia |
| IBSB | Insurance Business Supervisory Board |