John Spencer-Churchill
John Spencer-Churchill is the name of the following people:
- John Spencer-Churchill, 7th Duke of Marlborough (1822-1883), British statesman and nobleman
- John Spencer-Churchill, 10th Duke of Marlborough (1897–1972), British nobleman and politician
- John Spencer-Churchill, 11th Duke of Marlborough (1926–2014), British nobleman and politician
- John Strange Spencer-Churchill (1880–1947), British officer