Cranzahl Dam () is a dam in the Free State of Saxony in East Germany. It was built from 1949 to 1952 near Sehmatal-Cranzahl and the Bärenstein mountain in the Ore Mountains to supply drinking water to Annaberg-Buchholz and the surrounding area. Together with the Sosa Dam it was one of the two biggest dam construction projects of the newly created GDR. In keeping with the time it was called the Dam of Friendship (Talsperre der Freundschaft).