Bagn is the administrative centre of Sør-Aurdal municipality, Norway. Its population (SSB 2005) is 607.
Attractions include the Valdrestunet mall as well as Bagn Bygdesamling further down the valley.
Coordinates: 60°49′N 9°34′E / 60.817°N 9.567°E / 60.817; 9.567