| Abbreviation | Designation | |
|---|---|---|
| Wn | Weichensignal (German) | railway signal |
| WN | Waiblingen (German) | fare point / vehicle registration plate |
| WN | West Anglia Great Northern | railway company |
| WN | Württembergische Nebenbahnen AG (German) | railway company |
| Wn | Wien (1938–1945) (German) | railway administration |