| A ČO | spojka (nech aj) |
|---|---|
| AAB | Agence Africaine de Biotechnologie |
| AAB | Arbejdernes Andels Boligforening |
| AAB | Associazione Artisti Bresciani |
| AAC | Airborne Aircraft Controller |
| AAE | American Association of Engineers (skr.) |
| AACH | nemecká rieka |
| AACH | nemecké sídlo |
| AAI | American Alpine Institute (skr.) |
| AAI | American Alpine Institution |