Tresfjord is former municipality in Møre og Romsdal county, Norway. The municipality existed from 1899 until its dissolution in 1964. It encompassed about 200 square kilometres (77 sq mi) in the southern part of the present-day Vestnes Municipality. The municipality included the Skorgedalen valley and the area surrounding both sides of the southern half of the Tresfjorden. The village of Tresfjord was the administrative centre of the municipality, and it was the location of Tresfjord Church, the main church for the municipality.