Leka is a municipality in Trøndelag county, Norway. It is part of the Namdalen region. The administrative centre of the municipality is the village of Leknes on the island of Leka. Other villages in Leka include Sør-Gutvika and Madsøygrenda. The island municipality includes all of the island of Leka and part of the island of Austra as well as hundreds of smaller surrounding islands and skerries.