John Mordaunt
John Mordaunt is the name of the following people:
- John Mordaunt (Chancellor) († 1504), English civil servant and politician
- John Mordaunt, 1st Earl of Peterborough († 1642), English nobleman
- John Mordaunt, 1st Viscount Mordaunt (1626–1675), English nobleman and politician
- John Mordaunt (General) (1697–1780), English general and politician