| Autoritätsperson | authority figure |
| Aufsichtsperson | attendant |
| Autorisation | authorisation authorization |
| autorisieren | authorize authorise |
| autorisiert | authorized |
| Autoritarismus | authoritarianism |
| Autorität | authority |
| Autoxidation | autoxidation |
| automatisieren | automate automatise automatize |
| autoritativ | authoritative |
| autoritär | authoritarian |
| dritte Person | third person |
| Sanitätspersonal | paramedic |
| Trans-Person | transgender |
| Autofiktion | autofiction |
| Autotransporter | auto transport truck |
| Autoaggression | self-harm |
| Autobatterie | car battery |
| Autodigestion | autodigestion |
| Autoerotismus | autoeroticism autoerotism |