Cangas del Narcea is the oldest municipality in the Principality of Asturias in Spain. It is also the largest municipality in Asturias. It is in the southwest of Asturias, on the Asturian border with León. Formerly, Cangas del Narcea was known as Cangas de Tineo. Cangas del Narcea is also the name of the municipality's capital, and one of the judicial districts in Asturias.