Tydal is a municipality in Sør-Trøndelag county, Norway. The administrative centre of the municipality is the village of Ås. Other villages include Østby, Gressli, Aunet, and Stugudalen. There is a school and a kindergarten in Tydal.

The approximately 850 inhabitants in Tydal earn a living in farming, forestry, energy production, and tourism. During Easter, the number of people in Tydal increases by up to 5,000 people. Many people from Trondheim celebrate their holidays in the 1,400 cabins located throughout the municipality of Tydal.