John Spencer-Churchill may refer to:
John Spencer-Churchill, 7th Duke of Marlborough (1822–1883), British statesman and nobleman John Strange Spencer-Churchill (1880–1947), soldier and brother of the former British prime minister, Winston Churchill John Spencer-Churchill, 10th Duke of Marlborough (1897–1972), British peer John Spencer-Churchill (artist) (1909–1992), artist and son of John Strange Spencer-Churchill John Spencer-Churchill, 11th Duke of Marlborough (1926–2014), British peer John Kemys Spencer-Churchill (1835–1913), British colonial administrator
See also John Spencer (disambiguation) John Churchill (disambiguation)