The Free State of Saxony (German: Freistaat Sachsen) was one of the constituent states of the federally organized Weimar Republic from 1919 to 1933. The Free State was established in 1919 as the successor to the Kingdom of Saxony and lasted until the Nazi regime effectively absorbed all of Germany's federal states in April 1933. Following the reunification of Germany in 1990, the name "Free State of Saxony" was taken up again and remains Saxony's official name.
The Free State of Saxony grew out of the German Empire's defeat in World War I and the German revolution of 1918–1919.