Studnica lake (Polish: jezioro Studnica, pronounced [jɛˈʑɔrɔ studˈɲit͡sa]) is a lake located in the Gwda Valley District, in the north-west part of Poland.

It is 24.9 m (82 ft) deep, 2.2 km (1.4 mi) long and 0.8 km (0.50 mi) wide.

Studnica lake is also the source of Gwda river.

There are four different Studnica lakes in Poland.

This West Pomeranian Voivodeship location article is a stub.