| Abbreviation | Designation | |
|---|---|---|
| AZ | Abrechnungszeit (German) | |
| Az | Arbeitszug (German) Work train | vehicle fleet |
| 57 / AZ | Azərbaycan, Azərbaycan Respublikası (Azeri) Azerbaijan, Republic of Azerbaijan | country code |
| AZ | Autozug (German) Mototrain | train category |
| AZ | Alzey (German) | fare point / vehicle registration plate |
| AS | Autozug Sylt Shuttle (German) | offer / trademark |
| AZ | Altenburg-Zeitzer Eisenbahn (German) | railway company |