| Automat | vending machine |
| Automatik | automatism automatic automatic transmission |
| Automation | automation |
| automatisch | automatic automatically |
| Autocar | bus |
| Autokrat | autocrat |
| Automarkt | car mart |
| Automatismus | automatism |
| Automatograf | automatograph |
| autogam | autogamous |
| atomar | atomic |
| auto- | self- auto- |
| Autist | autist autistic person |
| Auto | car motor car auto order resolution writ |
| Autobahn | motorway freeway highway interstate highway |
| Autobus | bus coach motorbus |
| Autocue | autocue |
| Autodafé | auto-da-fé |
| Autofahrt | car ride |
| Autograf | autograph |