The Porsangerfjorden (Northern Sami: Porsáŋgguvuotna; Kven: Porsanginvuono) is a fjord in Finnmark county, Norway. The 123-kilometre (76 mi) long fjord is Norway's fourth longest fjord. It is located in the municipalities of Nordkapp and Porsanger and it empties out into the Barents Sea. The large island of Magerøya and the Porsanger Peninsula lie along the western shore of the fjord, and the Sværholt Peninsula lies along the eastern shore of the fjord.