John Montagu may refer to: John Montagu, 1st Baron Montagu (–), English nobleman John Montagu, 3rd Earl of Salisbury (–1400), English nobleman John Montagu (Trinity) (–1728), Master of Trinity College, Cambridge, 1683–1699 John Montagu, 2nd Duke of Montagu (1690–1749), British peer John Montagu, 4th Earl of Sandwich (1718–1792), British statesman, claimed to be the eponymous inventor of the sandwich John Montagu (Royal Navy officer) (1719–1795), Commodore Governor for Newfoundland and Labrador, 1776–1778 John Montagu, Marquess of Monthermer (1735–1770), British peer John Montagu, 5th Earl of Sandwich (1744–1814), British peer and Tory politician John Montagu (colonial secretary) (1797–1853), British army officer and Colonial Secretary of Van Diemen's Land and the Cape Colony John Montagu, 7th Earl of Sandwich (1811–1884), British peer and Conservative politician John Montagu, 11th Earl of Sandwich (1943–2025), British businessman and politician
See also John Montague (disambiguation) Montagu (disambiguation)