| Steinsundøyna | |
| Pushpin Map: | Vestland#Norway |
| Pushpin Label: | Steinsundøyna |
| Pushpin Label Position: | right |
| Pushpin Map Caption: | Location of the island |
| Location: | Vestland, Norway |
| Coordinates: | 61.0781°N 4.7744°W |
| Area Km2: | 18.7 |
| Length Km: | 9.5 |
| Width Km: | 3.7 |
| Elevation M: | 315 |
| Highest Mount: | Vardefjellet |
| Country: | Norway |
| Country Admin Divisions Title: | County |
| Country Admin Divisions: | Vestland |
| Country Admin Divisions Title 1: | Municipality |
| Country Admin Divisions 1: | Solund Municipality |
| Population: | c. 55 |
Steinsundøyna is an island in the municipality of Solund in Vestland county, Norway. The 18.7km2 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.[1]
The strait between Steinsundøyna and the neighbouring island to the west, Rånøyna, is called Steinsund. Despite being less than wide at the narrowest passage, it is shippable. For instance Hurtigruten ships pass that sound on their way from and to Bergen.