Radziejowice Palace is a complex of Classical residences surrounded by a park, located in the village of Radziejowice, Masovian Voivodeship in Poland.
The first residence was built here for the Radziejowski family in the 15th century. Two centuries later the frequently rebuilt Renaissance manor acquired the shape of a baroque palace complex interconnected with spacious gardens. The palace hosted an array of Polish and foreign individualities foremost of whom were the Polish kings - Sigismund III Vasa, Wladyslaw IV Vasa and John III Sobieski.

Subsequently Radziejowice belonged to the Ossolinski family, and then in 1782 came into possession of the Krasinski family and remained until the end of World War II, when most of the large private estates were nationalized in 1945.

After the devastation of World War II, the palace complex was nationalized and rebuilt with the funds from the Ministry of Culture and Art. Since 1965 the palace has functioned as a creative work home for artists, writers, actors, film-makers, musicians and painters. The palace houses a museum and an exhibition space.

Because of its proximity to Warsaw, Radziejowice always had many visitors: writers, journalists, poets and painters, among them Henryk Sienkiewicz, the Noble prize winner in literature, Jarosław Iwaszkiewicz, the writer, Lucjan Rydel the poet, and painters Wojciech Kossak and Jozef Chełmonski, who lived in nearby Kuklowka village.