Mørkdalstua[3] is the tallest mountain on the island of Hitra which is located in Hitra Municipality, Trøndelag county, Norway.

The 345-metre (1,132 ft) tall mountain lies on the western side of the island, about 8 kilometres (5.0 mi) northeast of the village of Forsnes and 7.5 kilometres (4.7 mi) southeast of the village of Kvenvær.

[2][4] The mountain is named after the Mørkdalen valley.

The last element is the finite form of tue which means "tussock".

The valley name Mørkdalen is a compound of mørk which means "dark" and the finite form of dal which means "dale" or "valley".