Ano Syros is a town and a former municipality on the island of Syros, in the Cyclades, Greece. Since the 2011 local government reform it is part of the municipality Syros-Ermoupoli, of which it is a municipal unit. The municipal unit includes the uninhabited islands Gyaros and Varvaroúsa. Population 3,611 ; land area 67.014 square kilometres. The municipal unit shares the island of Sýros with the municipal units of Ermoupoli and Poseidonia.