Kuş Island (Turkish: Kuş Adası, literally "Bird Island"), also called Arter Island (Armenian: Առտեր կղզի), is a small island in Lake Van, Turkey. It is now uninhabited but formerly contained a small monastery, the ruins of which can still be seen.

38°21′45.57″N 42°59′35.19″E / 38.3626583°N 42.9931083°E / 38.3626583; 42.9931083