Styrsö is a small island and a locality situated in Göteborg Municipality, Västra Götaland County, Sweden. It had 1,304 inhabitants in 2010.
It lies in the Southern Göteborg Archipelago of Sweden with about 1,400 inhabitants. Regular ferries connect the island to Gothenburg and a bridge links Styrsö with Donsö. The main communication vehicle on the island is a three-wheeled moped, called a flakmoped in Swedish. (The locals call it lastmoppe).