Schloss Weimar is a Schloss (palace) in Weimar, Thuringia, Germany. It is now called Stadtschloss to distinguish it from other palaces in and around Weimar. The building is located at the north end of the town's park along the Ilm river, Park an der Ilm. It forms part of the World Heritage Site "Classical Weimar", along with other sites associated with Weimar's importance as a cultural hub during the late 18th and 19th centuries.
From the middle of the 16th century it was the residence of the Dukes of Saxe-Weimar and, after they inherited the Duchy of Saxe-Eisenach in 1741, of Saxe-Weimar and Eisenach, which became the Grand Duchy of Saxe-Weimar-Eisenach from 1809 until the German revolution of 1918–1919. Names in English include Palace at Weimar, Grand Ducal Palace, City Palace and City Castle.