Oripää is a municipality in the Southwest Finland region of Finland. It is located in the southwestern part of the country, within the region that surrounds the city of Turku.
The municipality covers an area of 117.72 square kilometres, of which only 0.1 square kilometres is water. It has a population of 1,264, giving a population density of 10.73 inhabitants per square kilometre. Oripää is unilingually Finnish, meaning Finnish is the sole official language of the municipality.