| A/C | klimatizácia, po anglicky |
|---|---|
| A4O | označenie lietadiel Ománu, Omán (označenie lietadiel) |
| AAA | Amatérska atletická asociácia (skr.) |
| AAA | amateur athletic association (skr.) |
| AAC | zvukový formát |
| AAD | American Academy of Dermatology |
| AAD | Automatic Activation Device |
| AAE | automatic answering equipment (skr.) |
| AAF | Audit Automation Facilities |
| AAM | Advertising Account Manager |