Vilasantar is a municipality in northwestern Spain, located in the province of A Coruña within the autonomous community of Galicia. It belongs to the comarca (district) of Betanzos.
As a Galician municipality, it forms part of the region's local administrative structure, which is organized into provinces, comarcas, and municipalities. Its position in the province of A Coruña places it in Spain's northwest, a part of the country defined by its Atlantic coastline and its distinct Galician cultural and linguistic identity.