Mordaunt is both a surname and a given name. Notable people with the name include:
Surname:
Charles Mordaunt (disambiguation), several earls and baronetsDavid Mordaunt (born 1937), English former cricketerElinor Mordaunt (1872–1942), English author, writer and travelerGerald Mordaunt (1873–1959), English cricketerHarry Mordaunt (1663–1720), English lieutenant-generalHarriet Mordaunt (1848–1906), wife of Sir Charles MordauntHenry Mordaunt, 2nd Earl of Peterborough (1621–1697), English soldier, peer and courtierSir Henry Mordaunt, 12th Baronet (1867–1939), English cricketerJohn Mordaunt (disambiguation), numerous personsLewis Mordaunt, 3rd Baron Mordaunt (1538-1601), English peer and politicianOsbert Mordaunt (1876–1949), English cricketerPenny Mordaunt (born 1973), Member of ParliamentThomas Osbert Mordaunt (1730–1809), British officer and poetGiven name:
Mordaunt Bisset (1825–c. 1884), British politician and Member of ParliamentMordaunt Cracherode (died 1773 or possibly 1768), British Army officerJ. Mordaunt Crook, English architectural historianMordaunt Doll (1888–1966), English cricketerMordaunt Hall (1878–1973), film critic of The New York TimesSir Mordaunt Martin, 4th Baronet (c. 1740-1815)Mordaunt Shairp (1887–1939), English dramatist and screenwriterFictional characters:
Mordaunt, a main villain of the 1845 novel Twenty Years After by Alexandre DumasMordaunt, the central male character in the 1800 novel Mordaunt, Sketches of Life, Characters, and Manners in Various Countries; including the memoirs of a French Lady of Quality by John Moore