| Official Name: | Dun |
| Settlement Type: | Village |
| Pushpin Map: | Trøndelag#Norway |
| Pushpin Label Position: | top |
| Subdivision Type: | Country |
| Subdivision Name: | Norway |
| Subdivision Name1: | Central Norway |
| Subdivision Name2: | Trøndelag |
| Subdivision Type3: | District |
| Subdivision Name3: | Namdalen |
| Subdivision Type4: | Municipality |
| Subdivision Name4: | Namsos Municipality |
| Utc Offset1: | +01:00 |
| Utc Offset1 Dst: | +02:00 |
| Postal Code Type: | Post Code |
| Postal Code: | 7856 Jøa |
| Coordinates: | 64.6571°N 11.2646°W |
| Elevation M: | 38 |
| Elevation Footnotes: | [1] |
Dun[2] is a village in Namsos Municipality in Trøndelag county, Norway. It is located in the central part of the island of Jøa, and it is the location of Dun Church. Olav Duun was from this village.[3]
The village was the administrative centre of the old Fosnes Municipality until 2020 when the municipality was merged into Namsos.