Vegadeo is a municipality in the Autonomous Community of the Principality of Asturias, Spain. It is bordered in the north and east by Castropol, in the south by Villanueva de Oscos, Taramundi, and San Tirso de Abres, and in the west by the Eo River and San Tirso.

Galician–Asturian or Eonavian is a set of Romance dialects or falas whose linguistic dominion extends into the zone of Asturias between the Eo River and Navia River. The dialects have been variously classified as the northeastern varieties of Galician, as a linguistic group of its own, or as a dialect of transition between Galician and Asturian, an opinion upheld by José Luis García Arias, the former president of the Academy of the Asturian Language (ALLA).