Prince Michał Kazimierz Radziwiłł was a Polish–Lithuanian noble and magnate. He is sometimes referred to as the first Michał Kazimierz Radziwiłł, to distinguish him from the other member of his family to use the name.
- Occupation
- diplomat
- Position held
- Castellan of Vilnius, field lithuanian hetman, Voivode of Vilnius, starosta of Lida
- Citizenship
- Polish–Lithuanian Commonwealth
- Born
- October 26, 1625, October 26, 1635
- Died
- November 14, 1680
