A18
A18 or A 18 stands for:
- a locomotive series, see Alsace-Lorraine A 18
Motorways:
- Highway 18 in Belgium
- Autobahn 18 in Switzerland
- Autoestrada A18 in Portugal
- Autostrada A18 in Italy
- Autostrada A18 in Poland
- Bundesautobahn 18 in Germany (formerly planned)
- Rijksweg 18 in the Netherlands
- A18 (Kazakhstan)
