John Ewart (disambiguation)

John Ewart (1928–1994) was an Australian actor

John Ewart may also refer to:
 * John Ewart (architect) (1788–1856), Canadian architect and business
 * John Albert Ewart (1872–1964), Canadian architect
 * Jock Ewart (1891–1943), Scottish footballer
 * John Ewart (doctor) (1858–1939), New Zealand doctor and hospital superintendent
 * J. S. Ewart (John Skirving Ewart, 1849–1933), Canadian lawyer and author
 * Sir John Alexander Ewart (1821–1904), Scottish military leader