Eurajoki (Euraåminne in Swedish) is a municipality of Finland.

It is located in the province of Western Finland and is part of the Satakunta region. The municipality has a population of 5,791 and covers an area of 346.77 km² of which 4.12 km² is water. The population density is 16.8 inhabitants per km².

The municipality is unilingually Finnish.