Utsjoki is a municipality in Finland and the northernmost in the country. It lies in the Lapland region, bordering Norway and the municipality of Inari. The municipality was founded in 1876.
Utsjoki has a population of 1,112 (31 December 2025) and covers an area of 5,372.00 square kilometres (2,074.14 sq mi), of which 227.51 km2 (87.84 sq mi) is water. Its population density is 0.22 inhabitants per square kilometre (0.57/sq mi), among the lowest in Finland.