Casimir of Poland may refer to:
- Any ruler of Poland named Casimir:
- Duke Casimir I the Restorer (101658)
- High Duke Casimir II the Just (113894)
- King Casimir III the Great (131070)
- King Casimir IV Jagiellon (142792)
- Saint Casimir (145884), Polish–Lithuanian prince
See also
- Kazimierz (disambiguation), the Polish form of the name Casimir