Træna is a municipality in Nordland county, Norway. It is part of the Helgeland traditional region. The administrative centre of the municipality is the island/village of Husøya. Other villages include Selvær and Sanna.Fishing is the economic mainstay of Træna. Connections to mainland Norway are by means of boat and ferry. Routes are provided to Sandnessjøen, Nesna and Stokkvågen. Each year Træna plays hosts a music festival called Traena Music Festival.
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 municipality of Træna was established on 1 January 1872 when it was separated from the municipality of Lurøy. Initially, Træna had 289 residents. The municipal borders have not changed since that Time.