Taivalkoski (Finnish pronunciation: [ˈtɑi̯ʋɑlˌkoski]) is a municipality of Finland, it is located in the Province of Oulu and is part of the Northern Ostrobothnia region.

The municipality has a population of 3,660 (31 December 2024)[2] and covers an area of 2,650.66 square kilometres (1,023.43 sq mi) ofwhich 212.59 km2 (82.08 sq mi) is water.

[1] The population density is 1.5 inhabitants per square kilometre (3.9/sq mi).

The neighbouring municipalities are Kuusamo, Posio, Pudasjärvi and Suomussalmi.

The oldest still-operating shop of Finland, Jalavan Kauppa, is located in Taivalkoski; a shop was founded in 1883 by White Karelian-based Stephan Jakowleff, which is owned by his descendants of the Jalava family.