| AAB | Agence Africaine de Biotechnologie |
|---|---|
| AAC | Air Agency Certificate |
| AAP | brazílska tlačová agentúra |
| AAP | tlačová agentúra Austrálie |
| AAS | Anabolic Androgenic Steroid |
| AAS | Asociación Argentina de Sedimentología |
| ABA | Agent Based Architecture |
| ABA | Agent-Based Application |
| ABASTO | argentínske mesto |
| ABBADO | taliansky dirigent (Claudio, *1933) |