List of rulers of Courland
Dukes of Courland[]
- Council of the Duke (Interregnum) (1740-1758)
- Carl of Saxony (1758–1763)
- Ernst Johann von Biron (1763-1769)
- Peter von Biron (1769-1799)
House of Hohenzollern[]
- Frederick I (1799-1843)
- William I (1843-1881)
- Frederick William (1881-1909)
- William II (1909-1935)
- Frederick II (1935-1961)
- William II (1961-1994)
- Frederick III (1994-date)