Robert Montagu

Robert Montagu may refer to:


 * Robert Montagu, 3rd Earl of Manchester (1634–1683), English politician and courtier
 * Robert Montagu, 3rd Duke of Manchester (c. 1710–1762), MP
 * Robert Montagu (politician) (died 1693)
 * Robert Montagu (Royal Navy officer) (1763–1830), British admiral
 * Lord Robert Montagu (1825–1902), British Conservative politician