| AAB | Application Architecture Blueprint |
|---|---|
| AAB | Association of Applied Biologists |
| AAN | Application-Aware Network |
| ABA | Agent-Based Application |
| ABI | Application Binary Interface |
| ABS | Airport Base Station, WLAN riešenie od firmy Apple |
| AC | Appellation d'Origine Contrôlée (skr.), klasifikácia vína vo Francúzsku (fran.skr.) |
| ADN | Application Delivery Network |
| ADP | Application Development Platform |
| ADP | Application Distribution Protocol |