Friedenstein Palace is an early Baroque palace built in the mid-17th century by Ernest I, Duke of Saxe-Gotha at Gotha, Thuringia, Germany. In Germany, Friedenstein was one of the largest palaces of its time and one of the first Baroque palaces ever built. Friedenstein served as the main seat of the Dukes of Saxe-Gotha and later as one of the residences of the Dukes of Saxe-Coburg and Gotha, closely linked with the royal family of Great Britain through the marriage of Queen Victoria and Prince Albert. The final two ruling Dukes were both princes of the United Kingdom.

Ernest I, called "Ernest the Pious" was a duke of Saxe-Gotha and Saxe-Altenburg. The duchies were later merged into Saxe-Gotha-Altenburg.