Grøtsundet

View of Nonstinden (Rundfjellet) and Finnheimfjellet viewed across Grøtsundet, from Kvaløya
Interactive map of the strait
LocationTroms county, Norway
Coordinates69°46′44″N 19°09′09″E / 69.7789°N 19.1524°E / 69.7789; 19.1524
TypeStrait
Basin countriesNorway
Max. length25 kilometres (16 mi)
Max. width4–5 kilometres (2.5–3.1 mi)

Grøtsundet (Norwegian) or Ruohtnuorri (Northern Sami) is a strait between Tromsø Municipality and Karlsøy Municipality in Troms county, Norway. The 25-kilometre (16 mi) long strait separates the islands of Reinøya and Ringvassøya from the mainland to the south. The strait has a width of 4–5 kilometres (2.5–3.1 mi). The strait is one of the main shipping lanes into the city of Tromsø, which lies about 10 kilometres (6.2 mi) southwest of the strait.