Vega is a municipality in Nordland county, Norway. It is part of the Helgeland traditional region. The administrative centre of the municipality is the village of Gladstad. Other villages include Holand and Ylvingen.The municipality comprises about 6,500 islands in the Vega Archipelago. The main island of the municipality is also called Vega, and it is also the largest at 163 square kilometres (63 sq mi). Bremstein Lighthouse is located in the southwestern part of the municipality.
The municipality of Vega was established on 1 January 1838 (see formannskapsdistrikt). On 1 January 1965, the Skogsholmen area (population: 196) was transferred from Tjøtta to Vega. Then on 1 January 1971, the Skålvær islands (population: 32) in the northeastern part of Vega was transferred to Alstahaug.