| Official Name: | Bagn |
| Settlement Type: | Village |
| Pushpin Map: | Innlandet#Norway |
| Pushpin Label Position: | top |
| Pushpin Map Caption: | Location of the village |
| Subdivision Type: | Country |
| Subdivision Name: | Norway |
| Subdivision Name1: | Eastern Norway |
| Subdivision Name2: | Innlandet |
| Subdivision Type3: | District |
| Subdivision Name3: | Valdres |
| Subdivision Type4: | Municipality |
| Subdivision Name4: | Sør-Aurdal Municipality |
| Utc Offset1: | +01:00 |
| Utc Offset1 Dst: | +02:00 |
| Area Total Km2: | 0.86 |
| Population As Of: | 2021 |
| Population Total: | 627 |
| Population Density Km2: | 731 |
| Postal Code Type: | Post Code |
| Postal Code: | 2930 Bagn |
| Coordinates: | 60.8225°N 9.5521°W |
| Elevation M: | 230 |
| Elevation Footnotes: | [1] |
Bagn is the administrative centre of Sør-Aurdal Municipality in Innlandet county, Norway. The village is located in the Begnadalen valley, about to the southeast of the town of Fagernes. The river Begna runs through the village on its way through the Valdres region. The river has a 16m (52feet) tall waterfall at Bagn. The European route E16 highway passes through the village on its way between Bergen and Oslo.[2]
The 0.86km2 village has a population (2021) of 627 and a population density of .[3]
Bagn Church is located in the village. The Valdrestunet mall and the Bagn Bygdesamling museaum are both located in the area as well. The 13th-century Reinli Stave Church lies about to the west of the village. During World War II, there were some major battles in the Bagn area in April 1940, with a national memorial site at Bagnsbergatn.