| AACO | Arts and Culture Observatory (skr.) |
|---|---|
| AACO | Assault Airlift Control Officer |
| AACO | Australian Agricultural Company (skr.) |
| AAS | Aging and Adult Services |
| AAS | Air Assault School |
| AAT | Army Assault Team |
| ABBEVILLIEN | kultúra starého paleolitu |
| ABE | Adult Basic Education |
| ABIAD | kanadský kulturista |
| ABS | Adult Book Store |