| A/C | klimatizácia, po anglicky |
|---|---|
| AAA | Amatérska atletická asociácia (skr.) |
| AAA | amateur athletic association (skr.) |
| AAD | American Academy of Dermatology |
| AAD | Automatic Activation Device |
| AAE | automatic answering equipment (skr.) |
| AAF | Audit Automation Facilities |
| AARNE | fínsky folklorista, fínsky bádateľ v odbore folkloristika (Antti Amatus, 1867-1925) |
| AAS | Association d'Animations Scientifiques |
| AAU | Amateur Athletic Union (skr.) |