Friol is a municipality in the Lugo province in Galicia. It is located in northwest Spain. It is bordered on the north by Begonte and Guitiriz, to the south by Palas de Rei and Guntín, to the east by Lugo and Outeiro de Rei and to the west by the province of La Coruña. It has an area of 292.29 km2. It has a population of 3,616 inhabitants according to the INE in 2024. The population density is 12 inhabitants/km2.