Eurajoki (Finnish: [ˈeu̯rɑˌjoki]; Swedish: Euraåminne) is a municipality of Finland located in the region of Satakunta in the province of Western Finland. The municipality has a population of 9,061 (31 August 2024) and covers an area of 1,504.96 square kilometres (581.07 sq mi) of which 298.39 km2 (115.21 sq mi) is water. The population density is 17.59 inhabitants per square kilometre (45.6/sq mi).
The municipality is unilingually Finnish.