Prince Michał Kazimierz Radziwiłł was a Polish–Lithuanian noble. A member of the aristocratic Radziwiłł family, he was frequently referred to by his sobriquet Rybeńko, to distinguish him from the other Michał Kazimierz Radziwiłł. Ordynat of Niasviž and Olyka, owner of Biržai, Dubingiai, Slutsk, Kopyła and Shumsk.
- Occupation
- diplomat, politician, voivode
- Position held
- Great Hetman of Lithuania, kasztelan trocki, Voivode of Trakai, Voivode of Vilnius
- Citizenship
- Polish–Lithuanian Commonwealth
- Born
- June 13, 1702
