Kvaløya is an island in Tromsø Municipality in Troms county, Norway. At 737 square kilometres (285 sq mi), it is the fifth largest island in mainland Norway. It is connected to the neighboring island of Tromsøya to the east by the Sandnessund Bridge, to the island of Ringvassøya to the north by the sub-sea Kvalsund Tunnel, to the small island of Sommarøya to the west by the Sommarøy Bridge, and to the mainland to the south by the Rya Tunnel.