Langvatnet (Tysfjord)

infobox_lake
lake_name = Langvatnet
basin_countries= Norway, Sweden
location = Tysfjord (Nordland); Sweden
inflow =
outflow =
area = 5,46 km² (5,45 km² in Norway)
elevation = 727 m
residence_time =
shore = 28,26 km
depth =
max-depth =
volume =
coords = coord|67|54|14|N|16|43|39|E|region:NO_type:waterbody_scale:200000|display=inline,title
cities =
islands =
reference = NVE

Langvatnet (sami "Tjoaddnejávrre") s a Norwegian lake that lies on the border between Norway and Sweden in Tysfjord municipality in Nordland.

* List of lakes in Norway
* Geography of Norway