Kvitsøy is an island municipality in Rogaland county, Norway. Idyllic island of Kvitsøy lies far out on the fjord between Haugesund and Stavanger. It is the smallest of Ryfylke's municipalities.
At only 6.29 square-kilometer (2.43 sq mi), it is the smallest municipality in Norway by area. Kvitsøy is located in the traditional district of Ryfylke.