Ånderdalen National Park lies in Torsken and Tranøy municipalities in Troms county, Norway. The park was established on 6 February 1970 by royal decree. It was enlarged in 2004, and is now 125 square kilometres (48 sq mi).
The national park preserves Northern Norwegian coastal region in a natural state, including pine and birch forest and alpine plants. The last element is the finite form of dal which means "dale" or "valley". The meaning of the first element is unknown. In the valley and the park are similar names such as the river Ånderelva and the lake Åndervatnet.