The Rydzyna Castle is a Baroque castle in Rydzyna, Poland. It was built in the beginning of the 15th century by Jan of Czernina. At the end of the 17th century, Italian architects Joseph Simon Bellotti and Pompeo Ferrari erected the present Baroque castle on its ancient foundations. The first owners of the castle were the Leszczyński family. Together with a park and surrounding areas, it was one of the most splendid palaces in Greater Poland.

Rydzyna is a historic town in western Poland, located in the southern part of the Greater Poland Voivodeship, 10 km south of Leszno, in the Leszno County, close to the main Poznań - Wrocław highway S5.