Salangen is a municipality in Troms county, Norway. The administrative centre of the municipality is the village of Sjøvegan, where most of the people in the municipality live. Other villages include Elvenes, Laberg, and Seljeskog.

The municipality is situated along the Sagfjorden in south central Troms county. The municipality is mostly coastal areas around the fjord as well as some inland valleys. Salangen is home to the world's northernmost bat population.