Monckton is an English surname.

• Bridget Monckton, 11th Lady Ruthven of Freeland (1896–1982)
• Christopher J. Monckton (born 1954), musician, distant cousin of the Viscounts of Brenchley
• Christopher Monckton, 3rd Viscount Monckton of Brenchley (born 1952), UKIP politician
• Edward Monckton (1744–1832), Staffordshire politician and landowner
• Edward Monckton (North Northamptonshire MP) (1840–1916)
• Francis Monckton (1844–1926), politician, from the Viscounts of Galway family
• John Monckton (1955–2004), murdered financier, cousin of the Viscounts of Brenchley
• John Monckton (swimmer) (1938–2017), Australian swimmer
• John Monckton (town clerk) (1832–1902), Town Clerk of London, father of Lionel Monckton
• John Monckton, 1st Viscount Galway (1695–1751)
• George Monckton-Arundell, 6th Viscount Galway (1805–1876)
• George Monckton-Arundell, 7th Viscount Galway (1844–1931)
• George Monckton-Arundell, 8th Viscount Galway (1882–1943)
• Gilbert Monckton, 2nd Viscount Monckton of Brenchley (1915–2006)
• Henry Monckton (British Army officer) (1740–1778), killed in American Revolutionary War, brother of Robert
• Lionel Monckton (1861–1924), composer for musical theatre
• Robert Monckton (1726–1782), British general in North America and governor of New York (1726–1782)
• Rosa Monckton (born 1953), sister of the 3rd Viscount
• Walter Monckton, 1st Viscount Monckton of Brenchley (1891–1965), lawyer and politician

• Viscount Monckton of Brenchley (created 1957)

• Moncton, in New Brunswick Province, Canada

• Moncton (disambiguation)
• Monkton (disambiguation), place name in Britain and America
• Monckton Synnot, Australian squatter