Samos is a municipality in the province of Lugo, in the autonomous community of Galicia, Spain. It belongs to the comarca of Sarria.
The municipality shares its name with its principal settlement, Samos, a small town located in the eastern part of Lugo province along the Sarria route to Santiago de Compostela. The area is rural and mountainous, characteristic of the Galician interior.
Samos is best known for the Monastery of San Xulián de Samos, one of the oldest and largest Benedictine monasteries in Galicia, which has long served pilgrims travelling the Camino de Santiago. The town lies on the French Way, and the monastery remains its most prominent landmark.