Træna is a municipality in the county of Nordland, Norway.

Træna was separated from Lurøy in 1872.

The municipality consists of over a thousand small islands off the coast of Norway in the Helgeland area. Four of the islands, Husøy, Selvær, Sanna, and Sandøy are populated. Husøy is the municipality centre.

Fishery is the economic mainstay of Træna. Connections to mainland Norway is by means of boat and ferry, routes are provided to Sandnessjøen, Nesna and Stokkvågen.

The islands of Træna have been the site of a number of archeological discoveries, indicating that the island has been populated since the stone age.

The name

The municipality is named after the island of Træna (Norse Þriðna). The name is probably derived from the number þrír 'three' - and then referring to three peaks on the island.

Coat-of-arms

The coat-of-arms is from modern times (1987). It shows three fishhooks made of bone from the Stone Age.

(See also the coat-of-arms of Båtsfjord, Frøya and Øksnes.)