E18
E18 or E 18 stands for:
- DR class E 18 , electric locomotives of the Deutsche Reichsbahn
- European Route 18 , a trunk road from Enniskillen in Northern Ireland to Saint Petersburg in Russia
- HMS E18 , a British submarine
- a thread form for incandescent lamps, see lamp base
- Lens fault with the Canon Ixus and Powershot camera
