Vågan is a municipality in Nordland county, Norway. It is part of the Lofoten traditional region. The administrative centre of the municipality is the town of Svolvær.Vågan was established as a municipality on 1 January 1838 (see formannskapsdistrikt). Two other municipalities were later separated from it: Gimsøy (in 1856) and the town of Svolvær (in 1919). On 1 January 1964, these were both merged back into Vågan.
The municipality (originally the parish) is named after the old Vågan farm (Norse Vágar), since the first church was built there. The name is the plural form of vág m 'bay'. The island of Austvågøy (Norse Vágøy) was named after this important site - and later also Vestvågøy.