List of M18 roads
This is a list of roads designated M18. Road entries are sorted in the countries alphabetical order.
- M-18 road (Bosnia and Herzegovina) a road connecting Sarajevo, Trnovo, Foča and Trebinje
- M18 motorway (Great Britain), a road connecting Rotherham and Goole in Yorkshire, England
- M18 motorway (Ireland), a road connecting junction 9 on the Shannon bypass in County Clare and Gort in County Galway
- M-18 (Michigan highway), a road connecting US 10 near North Bradley and M-72 near Luzerne
- M18 highway (Russia), a road connecting Saint Petersburg and Murmansk