Svislach Castle (Belarusian: Свіслацкі замак) was a castle that lied in the lands of present day Belarus on the right bank of the Byarezina River in the place were it meets the Svislach River.
Initially the castle was established as the center of the Svislach Duchy, it later belonged to the Minsk Duchy, and from the 14th century to the Grand Duchy of Lithuania. The castle came into possession of the Radziwill family. One of its prominent owners was Bogusław Radziwiłł.
