Steinsundøyna is an island in the municipality of Solund in Sogn og Fjordane county, Norway. The sits on the north side of the Sognesjøen, at the mouth of the large Sognefjorden. The rocky island is virtually treeless (except in small, sheltered areas). In 2001, there were only about 55 residents on the island. There is a road that crosses the island, connecting the islands of Ytre Sula (by ferry) and Sula (by bridge). The largest population centre on Steinsundøyna is the village of Steinsund on the eastern coast of the island, just across the strait from the village of Hardbakke on the island of Sula.

Steinsundøyna is an island in the municipality of Solund in Sogn og Fjordane county, Norway. The sits on the north side of the Sognesjøen, at the mouth of the large Sognefjorden. The rocky island is virtually treeless (except in small, sheltered areas). In 2001, there were only about 55 residents on the island. There is a road that crosses the island, connecting the islands of Ytre Sula (by ferry) and Sula (by bridge). The largest population centre on Steinsundøyna is the village of Steinsund on the eastern coast of the island, just across the strait from the village of Hardbakke on the island of Sula.