The Lago di Piana degli Albanesi () is the oldest artificial lake in Sicily. It is located in Piana degli Albanesi, in the Province of Palermo, Sicily, Italy. At an elevation of 612 m, its surface area is 3.1 kmò and it has an average depth of 10.6 m.
The lake was made to produce electricity and supply water for drinking and irrigation. It was built from 1920 to 1923 by hand. The output water jump 475 m lower until the Casuzze hydro-electrical plant near Palermo. In the 1960s, to supply the increased demand of electricity, a newer plant just near the dam was built, which is still in function.