Lanreath (Cornish: Lannreydhow) is a civil parish and a village in southeast Cornwall, England, United Kingdom. The village is situated five miles (8 km) west-northwest of Looe. The name Lanreath (pronounced Lanreth) means 'church (Lann) of Raydhogh' and it has been known variously as Lanreythow, Lanrathew, or Lanrethou. The village is mentioned in the Domesday Book as Lanredoch.