Målselvdalen is the largest valley in Troms county, Norway.

The river Målselva runs through the valley, ending at the Målselvfjorden (an arm off the main Malangen fjord).

The 60-kilometre (37 mi) long valley runs to the west and then to the north, following the path of the river.

Most of the residents of Målselv Municipality live in this valley.

The bailiff in the district, Jens Holmboe, was instrumental in settling this region.