Lanmeur (Breton:Lanneur) is a commune in the Finistère department of Brittany in north-western France.
A hamlet in the commune called Kerouac (Breton:Kervoach) has been established as the source of the name of the American writer Jack Kerouac. A street in Lanmeur has been named rue Jack Kerouac, and in March 2010 a first Jack Kerouac Festival took place in the commune.