Lavysas
Lake Lavysas from western shore
Lavysas
Location	Varena district, Lithuania
Coordinates	54°10′N 24°25′E / 54.167°N 24.417°E / 54.167; 24.417
Type	glacial lake
Primary inflows	Merkys, Lavysa
Max. length	1.5 kilometres (0.93 mi)
Max. width	1.2 kilometres (0.75 mi)
Max. depth	10.2 metres (33 ft)

Lavysas is a lake in southern Lithuania, Varena district, about 5 miles (8.0 km) south of Perloja and 10 miles (16 km) southwest of Varena, surrounded by the Dainava forest. The lake is 1.5 kilometres (0.93 mi) long and has a width up to 1.2 kilometres (0.75 mi). The maximum depth is 10.2 metres (33 ft). The lake is of glacial origin, thermokarst, and forms an oval shape. The shores are sandy and covered with coniferous forests. The southern coast on the other hand is swampy. The lake collects the water from two streams, the Merkys and its tributary the Lavysa. Located on the west coast is the village of Lavyso. Close to the lake are many campsites and rest houses.