Karijoki (Finnish: [ˈkɑriˌjoki]; Swedish: Bötom) is a municipality of Finland.

The population of Karijoki is 1,159 (December 31, 2024),[2] which makes it the smallest municipality in South Ostrobothnia in terms of population.

The municipality covers an area of 185.58 km2 (71.65 sq mi) of which 0.78 km2 (0.30 sq mi) is inland water (January 1, 2018).

A proposed neanderthal cave, Susiluola, was found in the Pyhävuori mountains in Karijoki in 1997.

Media related to Karijoki at Wikimedia Commons Karijoki travel guide from Wikivoyage This Western Finland location article is a stub.