Alexander of Courland, nicknamed "Alexander the One-armed", was a Baltic German prince and the brother of Duke Frederick (II) Casimir of Courland. He was the youngest son of Jakob Kettler (1610–1682), Duke of Courland and his wife Luise Charlotte von Brandenburg (1617–1676), eldest daughter of Prince elector Georg Wilhelm von Brandenburg. He was a member of the Kettler dynasty.
- Occupation
- military personnel
- Born
- October 18, 1658
- Died
- June 28, 1686
