Ii (Finnish pronunciation: [iː]; Swedish: Ijo) is a municipality of Finland. It is situated by the Bothnian Bay, at the mouth of river Iijoki, and it is part of the North Ostrobothnia region. The municipality has a population of 9,767 (31 December 2025) and covers an area of 2,872.44 km2 (1,109.06 sq mi) of which 1,256.69 km2 (485.21 sq mi) is water.
