Duchess of Marlborough
Duchess of Marlborough is a title held by the wives of the Dukes of Marlborough and may refer to:
- Sarah Churchill, Duchess of Marlborough, wife of the 1st Duke
- Henrietta Godolphin, 2nd Duchess of Marlborough, suo jure Duchess, daughter of the 1st Duke
- Elizabeth Spencer, Duchess of Marlborough, wife of the 3rd Duke
- Caroline Spencer, Duchess of Marlborough, wife of the 4th Duke
- Susan Spencer-Churchill, Duchess of Marlborough, wife of the 5th Duke
- Jane Spencer-Churchill, Duchess of Marlborough (1798–1844), first wife of the 6th Duke
- The Hon. Charlotte Augusta Flower, second wife of the 6th Duke
- Jane Francis Clinton Stewart, third wife of the 6th Duke
- Frances Spencer-Churchill, Duchess of Marlborough, wife of the 7th Duke
- Albertha Spencer-Churchill, Duchess of Marlborough, first wife of the 8th Duke
- Lily Spencer-Churchill, Duchess of Marlborough, second wife of the 8th Duke
- Consuelo Vanderbilt, first wife of the 9th Duke
- Gladys Spencer-Churchill, Duchess of Marlborough, second wife of the 9th Duke
- The Hon. Alexandra Mary Cadogan, first wife of the [John Spencer-Churchill, John Spencer-Churchill, 10th Duke of Marlborough|10th Duke of Marlborough|10th Duke]
- Laura Spencer-Churchill, Duchess of Marlborough, second wife of the 10th Duke
- Rosita Spencer-Churchill, Duchess of Marlborough, third wife of the 11th Duke
- Lily Mahtani, fourth wife of the 11th Duke
- Rebecca Mary Few Brown, first wife of the 12th Duke
- Edla Griffiths, second wife of the 12th Duke