| AAS | Adaptive Antenna System |
|---|---|
| AAS | Annuaire des Associations de Santé |
| ACU | Antenna Control Unit |
| ADK | Ante Diem Kalendarum (skr.) |
| ADP | Antenna Digital Positioner |
| ADU | Antenna Drive Unit |
| ACHR | pred Kristom, pred naším letopočtom (ante Christum - lat. skr.) |
| AKV | Annortotik Kvantev Vermisse (skr.) |
| ATA | Allen Telescope Array, anténová smerová sústava pre SETI |
| CLT | Canterbury Language Training |