John Casimir
John Casimir and Johann Casimir is the name of:
- Johann Casimir ( Saxe-Coburg ) ( 1564-1633 ), Duke of Saxe- Coburg
- Johann Casimir (Nassau -Weilburg ) ( 1577-1602 ), founder of the line of Nassau- Gleiberg
- John Casimir (Pfalz - simmering ) ( 1543-1592 ), Count Palatine of Pfalz- simmering and administrator of the Palatinate
- John Casimir (Pfalz -Zweibrücken - Kleeburg ) ( 1589-1652 ), Count Palatine of Pfalz- Zweibrücken - Kleeburg
- John Casimir (Anhalt -Dessau ) ( 1596-1660 ), Prince of Anhalt -Dessau
- John II Casimir (1609-1672), King of Poland
- Disambiguation