Boguslaw Radziwill (Lithuanian: Boguslavas Radvila; Belarusian: ???????? ????????; 3 May 1620 – 31 December 1669) was a Polish princely magnate and a member of the Polish-Lithuanian szlachta, or nobility.
He was of the Radziwill magnate family.
By birth he was an Imperial Prince of the Holy Roman Empire.
He was a descendant of the famous knight Zawisza Czarny.