Map - Halsa

Halsa is a former municipality in Møre og Romsdal county, Norway. The municipality existed from 1838 until 2020 when it became part of Heim Municipality in Trondelag county. It was part of the Nordmøre region. The administrative centre of Halsa was the village of Liabøen. Other villages in the municipality included Todalen, Halsanaustan, Valsøyfjord, Engan, Hjellnes, and Valsøybotnen.

At the time of its dissolution in 2020, the 301 km2 municipality was the 279th largest by area out of the 422 municipalities in Norway. Halsa was the 349th most populous municipality in Norway with a population of 1,571. The municipality's population density was 5.4 PD/km2 and its population has decreased by 6% over the last decade.

The parish of Halsa was established as a municipality on 1 January 1838 (see formannskapsdistrikt law). On 1 January 1868, an unpopulated area of Halsa was transferred to the neighboring municipality of Straumsnes. On 1 January 1879, a part of Halsa (population: 279) was transferred to the neighboring municipality of Stangvik. The next year, the Torjulvågen area (population: 240) on the west side of the Halsafjorden was transferred to Tingvoll Municipality. On 1 July 1915, part of southern Halsa (population: 114) was transferred to Åsskard Municipality.

During the 1960s, there were many municipal mergers across Norway due to the work of the Schei Committee. On 1 January 1965, all of Valsøyfjord Municipality that was located on the mainland (population: 1,104) was merged into Halsa Municipality. On 1 January 1976, the district of Aure Municipality located south of the Vinjefjorden (population: 158) was transferred to Halsa Municipality.

On 1 January 2020, Halsa merged with the neighboring municipality of Hemne and the Ytre Snillfjord area in the municipality of Snillfjord to form Heim Municipality. The new municipality is located in Trøndelag county, which means that as part of the merger Halsa left Møre og Romsdal county and moved to Trøndelag.