Sir John Gage KG (28 October 1479 โ 18 April 1556) was an English courtier during the Tudor period.
He held a number of offices, including Chancellor of the Duchy of Lancaster (1542โ1547), Comptroller of the Household (1540โ1547), Constable of the Tower (1540โ1556) and Lord Chamberlain (1553โ1556).