| Autoradio | car radio automobile radio |
| Autoradiogramm | autoradiogram autoradiograph |
| Autoerotik | autoerotism |
| Autogamie | autogamy |
| Autografie | autography |
| Autokratie | autocracy |
| Automatik | automatism automatic automatic transmission |
| Automation | automation |
| Autoradiografie | autoradiography |
| Autorin | author writer |
| Autograph | autograph |
| Autarkie | autarky self-sufficiency |
| Autobahn | motorway freeway highway interstate highway |
| Autocar | bus |
| Autodafé | auto-da-fé |
| Autodieb | car thief |
| Autodrom | motor-racing circuit dodgems track bumper car dodgem |
| Autofahrt | car ride |
| Autofähre | car ferry |
| Autogiro | autogyro autogiro |