Sandiás is a municipality of Galicia, Spain, next to Xinzo de Limia in the province of Ourense. Its estimated population is 1,585, distributed among 3 parishes (Couso de Limia, Piñeira de Arcos, Sandiás). Its area is 53 km², a great part of which is drained fields from the Antela lagoon. This is an agricultural area. Potatoes and cereals are the most important crop.