Launceston (/ˈlɑːnstən/ LARN-stən or /ˈlɔːnstən/ LAWN-stən), locally /ˈlænsən/ LAN-sən or /ˈlɑːnsən/ LARN-sən, (Cornish: Lannstevan;[2] rarely spelled Lanson) is a town, ancient borough, and civil parish in east Cornwall, England, United Kingdom.

Dunheved was the Southwestern Brittonic name for the town in the West Saxon period.