| Autochrom | autochrome |
| auxochrom | auxochromic |
| Autodrom | motor-racing circuit dodgems track bumper car dodgem |
| Autocar | bus |
| Autocross | autocross |
| Autogiro | autogyro autogiro |
| Autosom | autosome |
| Autozoom | autozoom |
| autochthon | autochthonous |
| autonom | autonomous self-governed |
| monochrom | monochrome monochromatic |
| xanthochrom | xanthochromic |
| Autocue | autocue |
| Autofahrer | motorist driver car driver |
| Autofahrt | car ride |
| Autofähre | car ferry |
| Autograf | autograph |
| Autogramm | autograph |
| Autohaus | car dealer car dealership |
| Autokino | drive-in drive-in cinema drive-in theater |