Vagos (Portuguese pronunciation: [ˈvaɣuʃ] ⓘ) is a town and a municipality in Aveiro District, belonging to Centro Region of Portugal.

In Roman times, the municipality was called Vacus, and had both coastline and large sand dune valleys just east of its center.

According to António Gomes da Rocha Madail and other writers, there is tradition among the native population that they are descendants of the seafaring salt farmers of Phoenicia.

Its green meadows create exceptional conditions for cattle breeding and milk production at a national level.

Its present mayor is João Paulo de Sousa Gonçalves of the Social Democratic Party.