| Abbreviation | Designation | |
|---|---|---|
| AA | Ausrundungsbogenanfang (German) | railway technology |
| AA | Aalen (German) | fare point / vehicle registration plate |
| Åä | Åänge (Swedish) | station code |
| Aä | Alväng (Swedish) | station code |
| Åa | Åseda (Swedish) | station code |
| 2533 / AA | Hamburg-Altona (German) | station code |