Eurajoki (Swedish: Euraåminne) is a municipality of Finland located in the region of Lounais-Suomi.
Eurajoki is part of the county of Satakunta in the province of Western Finland. The municipality has a population of 9,452 (31 January 2019) 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 27.37 inhabitants per square kilometre (70.9/sq mi).
The municipality of Luvia was merged to Eurajoki on 1 January 2017.
The municipality is unilingually Finnish.