John Hamilton, 4th Earl of Haddington (1626 - 31 August 1669) was a Scottish nobleman.
Lord Haddington was a minor in 1645, when he succeeded his brother Thomas who had died from consumption in that year.
Owing to lameness, Haddington did not participate in the military, but was a conscientious attender of Parliament.
Haddington attended the coronation of Charles II at Scone Abbey in 1651, and was later fined the sum of £555 11s 8d under Cromwell's Act of Grace.
[2] Haddington died on 31 August 1669 at Tyninghame House, East Lothian.