Class 18
- 4-6-2
- A18-class container ship
- Baden IV f
- Baden IV h
- Bavarian S 3/6
- Belgian Railways Class 18 (Alsthom)
- Belgian Railways Class 18 (Siemens)
- British Rail Class 18
- DR 18 201
- DRG Class 61
- Deutsche Reichsbahn
- Fenniarail Class Dr18
- GER Class T18
- Länderbahnen
- NSB Class 18
- PKP Class Pm36
- Saxon XVIII H
- Type 18 (disambiguation)
- Württemberg C