John Cannon

John Cannon may refer to:
 * John Cannon (American football) (born 1960), former member of the Tampa Bay Buccaneers
 * John Cannon (historian) (1926–2012), British historian
 * John Cannon (politician) (died 1833), Canadian builder and politician
 * John Cannon (racing driver) (1933–1999), Canadian auto racer
 * John Cannon (rugby union) (1980–2016), Canadian rugby union player
 * John K. Cannon (1892–1955), U.S. Air Force general
 * John Q. Cannon (1857–1931), American newspaper editor and general authority of The Church of Jesus Christ of Latter-day Saints
 * Ace Cannon (John Cannon, 1934–2018), American saxophonist