Skaun is a municipality in Sør-Trøndelag county, Norway. It is part of the Orkdalen region. The administrative centre of the municipality is the village of Børsa. Other villages include Buvika, Eggkleiva, Melby, Skaun, and Viggja.
Skaun is predominantly rural, but is nonetheless situated only from Norway's third largest city, Trondheim. Most inhabitants, except agricultural and public sector workers, work outside of Skaun in Trondheim, Orkanger, or Melhus. The European route E39 runs east to west across the northern part of the municipality and Norwegian County Road 709 runs north and south through the municipality.