George Fleetwood (1623–1672) was an English major-general and one of the regicides of King Charles I of England. Fleetwood was one of the commissioners for the trial of Charles I, 1648–9; member of last Commonwealth Council of State and M.P. for Buckinghamshire, 1653; for Buckingham, 1654; member of Cromwell's Upper House, 1657; joined General George Monck, 1660, and though condemned to death at the Restoration, was never executed.