John McEwen was the 18th Prime Minister of Australia.
John McEwen may also refer to:
John McEwen (athlete) (born 1974), American hammer thrower John A. McEwen (1824–1858), mayor of Nashville, Tennessee John Blackwood McEwen (1868–1948), Scottish classical composer John L. McEwen (1928–2010), American politician Sir John McEwen, 1st Baronet (1894–1962), Scottish politician John McEwen (cricketer) (1862–1902), English cricketer