| Langvatnet | |
| Pushpin Map: | Nordland#Norway |
| Pushpin Label Position: | bottom |
| Pushpin Map Caption: | Location of the lake |
| Coordinates: | 66.9051°N 14.1607°W |
| Location: | Gildeskål, Nordland |
| Basin Countries: | Norway |
| Area: | 3.81km2 |
| Reference: | NVE |
Langvatnet is a lake that lies in the municipality of Gildeskål in Nordland county, Norway. The lake is located about southeast of the municipal centre of Inndyr. It sits directly southwest of the large lake Sokumvatnet.[1] The lake is partially supplied by discharge from the Langvann Hydroelectric Power Station[2] and serves as a reservoir for the Sundsfjord Hydroelectric Power Station.[3]