The Old Palace (German: Altes Schloss) is a former castle located on the Schillerplatz in Stuttgart, Germany.

From 1553-1578, Dukes Christoph and Louis III renovated the castle adding an equestrian staircase built by Blasius Berwart in 1560 and the church and conference room in 1562.

[1] The castle again saw damage, and large parts of the ethnographic collection of the Landesmuseum Württemberg fell victim to fire, during World War II before being renovated in 1971.

On the Karlsplatz side of the Old Castle is a museum dedicated to the memory of Claus von Stauffenberg a former resident of Stuttgart who attempted to assassinate Adolf Hitler on 20 July 1944.

In the Landesmuseum's exhibits are Stone Age and Roman artifacts, paintings, and a recounting of ancient regional history.