|Location||Steinkjer and Snåsa, Trøndelag|
|Max. length||40 kilometres (25 mi)|
|Max. width||5 kilometres (3.1 mi)|
|Surface area||122 km2 (47 sq mi)|
|Max. depth||186 metres (610 ft)|
|Surface elevation||24 metres (79 ft)|
Snåsavatnet (Urban East Norwegian: [ˈsnoːsɑˌvɑtnə]; English: Lake Snåsa) is Norway's sixth-largest lake. The 122-square-kilometre (47 sq mi) lake is located in the municipalities of Steinkjer and Snåsa in Trøndelag county, Norway. The villages of Følling and Sunnan lie at the southwestern end of the lake and the village of Snåsa lies at the northeastern end of the lake. European route E6 runs along the northern shore of the lake and the Nordland Line runs along the southern shore.
The lake is approximately 40 kilometres (25 mi) long and on average about 3 kilometres (1.9 mi) wide. The surface of the lake is only 24 metres (79 ft) above sea level, and it reaches depths of up to 186 metres (610 ft). The lake was created by glacial erosion. As is seen on a map, the lake looks like an extension of the Trondheim Fjord. The outlet is the river Byaelva, which empties into the Beitstadfjorden (an arm of the Trondheim Fjord) in the city of Steinkjer.