George Spencer-Churchill, 5th Duke of Marlborough FSA, styled Marquess of Blandford until 1817, was a British nobleman, politician, peer, and collector of antiquities and books.
- Occupation
- politician, aristocrat, collector
- Position held
- member of the 2nd Parliament of the United Kingdom, member of the 17th Parliament of Great Britain
- Citizenship
- United Kingdom of Great Britain and Ireland, Kingdom of Great Britain
- Born
- March 6, 1766