Lake Stratos (Greek: Λίμνη Στράτου) is an artificial lake near Stratos in Aetolia-Acarnania, western Greece.

The lake is fed and drained by the river Acheloos.

It was formed by the Stratos Dam, completed in 1989.

Its maximum capacity is 80,000,000 m³ of water.

It is used for the generation of hydroelectric power.