Uurainen (Swedish: Uurainen, also Urais) is a municipality of Finland.
It is part of the Central Finland region. The municipality has a population of 3,652 (30 June 2025) and covers an area of 372.26 square kilometres (143.73 sq mi) of which 24.22 km (9.35 sq mi), or roughly 6.5%, is water. The population density is 10.49 inhabitants per square kilometre (27.2/sq mi).