Klosterøy is an island in Stavanger municipality in Rogaland county, Norway.

[1] The 1.7-square-kilometre (0.66 sq mi) island lies on the south side of the Boknafjorden in the Rennesøy island group.

It lies immediately north of the island of Fjøløy and immediately west of the island of Mosterøy.

Klosterøy island is notable since it is the location of the historic Utstein Abbey and the 800-year old Utstein Church.

This Rogaland location article is a stub.