Finnøy is a municipality in Rogaland county, Norway. It is an island community located in Boknafjorden, 13 nautical miles (24 km) north of Stavanger.The parish of Finnø was established as a municipality on 1 January 1838 (see formannskapsdistrikt). Sjernarøy was merged with Finnøy on 1 January 1965.Finnøy is an agricultural community dominated by dairy, meat, poultry, and fish farming products, with strong horticultural traditions, mainly greenhouse production of tomatoes, and some tourism.The municipality is named after the island of Finnøy (Old Norse: Finnøy). The meaning of the first element is unknown and the last element is øy which means "island." Before 1918, the name was written "Finnø."