Pszczyna Castle, also known in English as Pless Castle, is a classical-style palace in the city of Pszczyna in southwestern Poland. Constructed as a castle in 13th century or earlier, in a Gothic architectural style, it was rebuilt in a Renaissance style in the 17th century. During the course of the 18th and 19th centuries, the exterior of the castle was partially changed into a Baroque-Classical style. The Classicist modernization transformed the complex into what is usually described a palace.
In its history the castle was a residence of Silesian and Polish Piast nobles, then the German von Promnitz noble clan and later the German von Pless family. The castle became owned by the state after the death of the last Prince of Pless, Hans Heinrich XV in 1936.