Vârșolț Reservoir (Romanian: Lacul de acumulare Vârșolț) is the largest lake in Sălaj County, Romania.

Vârșolț Lake is situated in the Crasna River basin, between Crasna and Vârșolț.

The lake has a surface area of 652 ha (1,610 acres) and a volume of 50.2 million m3 (1.77 billion cu ft) of water.

Created after the 1970 floods in Romania, the lake controls the water output of the Crasna River.

Vârșolț Lake is a drinking water source for Zalău and Șimleu Silvaniei towns.