| AAB | Application Architecture Blueprint |
|---|---|
| AACO | Arts and Culture Observatory (skr.) |
| AACO | Australian Agricultural Company (skr.) |
| AAD | American Academy of Denturity |
| AANALA | prístav v Turecku |
| AAP | austrálska tlačová agentúra |
| AAP | brazílska tlačová agentúra |
| AAP | tlačová agentúra Austrálie |
| AAS | Alternate Architecture Study |
| AAVA | American Academy of Veterinary Acupuncture (skr.) |