Styrsö (Swedish pronunciation: [ˈstʏ̂ʂːœ])[2] is a small island and a locality situated in Gothenburg Municipality, Västra Götaland County, Sweden.

In the 16th century the Swedish king Gustav Vasa supported the establishment of a farming/fishing society on the island, who could deliver fish to people living further up the river Göta Älv.

On clear days you can see Bohuslän in the north, Gothenburg in the east, Halland to the south and the silhouette of Vinga against the horizon in the west.

In the beginning of the 1800s the Öberg family took over the herring salting factory which was situated by the sea and established an inn – Café Öbergska today.

The Arbores Society are active today and are responsible for planting trees in the nearby park for recreational purposes and organizing the traditional Midsummer festivities on Bratten.

On the road down to the harbour lies the oldest house on Styrsö: a red painted front chamber cottage on the left side.

Years ago, Tången was a separate part of the island, where the houses were built very close to each other, like in many other fishing communities in Bohuslän.