| Autodrom | motor-racing circuit dodgems track bumper car dodgem |
| Autochrom | autochrome |
| Autosom | autosome |
| Autozoom | autozoom |
| autonom | autonomous self-governed |
| Aerodrom | aerodrome |
| Autocross | autocross |
| Autodafé | auto-da-fé |
| Autodieb | car thief |
| Autogiro | autogyro autogiro |
| Autograf | autograph |
| Autogramm | autograph |
| Autokrat | autocrat |
| Autor | author literator |
| Autorin | author writer |
| autofrei | carfree |
| autogam | autogamous |
| autotroph | autotroph |
| Prodrom | prodrome |
| Velodrom | velodrome |