John Sumner
John Sumner may refer to:
- John Sumner (climber) (1936–2004), British climber
- John Sumner (actor born 1951), English actor
- John Sumner (17th-century actor) (died 1649), English theatre actor during the Caroline era
- John Sumner (bishop) (1780–1862), bishop in the Church of England and Archbishop of Canterbury
- J. D. Sumner (1924–1998), American gospel singer, songwriter and music promoter
- John Robert Sumner (1850–1933), 1873 FA Cup Finalist
- John S. Sumner (1876–1971), headed the New York Society for the Suppression of Vice
- John Sumner (director) (1924–2013), English-born Australian artistic director and founder of Melbourne Theatre Company
- John Sumner (priest) (d. 1772) Canon of Windsor and Headmaster of Eton College