Haltdalen (historically: Holtaalen or Holtålen) is a former municipality in the old Sør-Trøndelag county, Norway.

[7][8] The parish of Holtaalen (later re-named Haltdalen) was established as a municipality on 1 January 1838 (see formannskapsdistrikt law).

Starting in the 1960s, there were many municipal mergers across Norway due to the work of the Schei Committee.

[10][11] On 15 October 1937, a royal resolution changed the name of the municipality to Haltdalen, effective 1 January 1938.

At the time of the municipal dissolution, it was part of the Haltdalen prestegjeld and the Gauldal prosti (deanery) in the Diocese of Nidaros.

[8] The highest point in the municipality was the 1,320-metre (4,330 ft) tall mountain Forollhogna.

The municipal council (Herredsstyre) of Haltdalen was made up of representatives that were elected to four year terms.