Halsa is a municipality in Møre og Romsdal county, Norway. It is part of the Nordmøre region. The administrative centre of Halsa is the village of Liabøen. Other villages in the municipality include Halsanaustan, Valsøyfjord, Engan, Hjellnes, and Valsøybotnen.
The municipality (originally the parish) is named after the old Halsa farm (Old Norse: Hǫlsyinjar), since the first church was built there. The first element is hals which means "neck" and the last element is the plural form of vin which means "meadow" or "pasture". Here, the word hals is referring to an isthmus (neck of land) between two fjords: Halsafjord and Skålvikfjord. Before 1918, the name was written "Halse".
The coat-of-arms is from modern times. They were granted on 19 August 1988. The motif represents the three fjord headlands of the municipality.