| Autonummer | license plate number |
| Atomnummer | atomic number |
| Autonomie | autonomy |
| Kontonummer | account number |
| Hausnummer | house number ballpark figure |
| Luftnummer | flop washout |
| Nullnummer | free first issue pilot issue |
| Autobombe | car bomb |
| Autofahrer | motorist driver car driver |
| Autogamie | autogamy |
| Autokäufer | car buyer |
| Autonarr | piston head pistonhead |
| Autonomist | autonomist |
| Autotomie | autotomy |
| Autotunnel | car tunnel |
| autonom | autonomous self-governed |
| Antonymie | antonymy |
| Flugnummer | flight number |
| PIN-Nummer | PIN |
| E-Nummer | E number |