| A4O | označenie lietadiel Ománu, Omán (označenie lietadiel) |
|---|---|
| A9C | označenie lietadiel Bahrajnu |
| AAB | Annals of Applied Biology |
| AAB | Association of Applied Biologists |
| AAB | Atelier Artistique du Beton |
| AAB | Ateliers-Artistes-Belleville |
| AAD | Applied Acoustic Design (skr.) |
| AAP | tlačová agentúra Austrálie |
| AAS | Academy of Applied Science |
| AAS | Applied Acoustics Systems |