John Cannon
John Cannon may refer to:
- John Cannon (American football), former member of the Tampa Bay Buccaneers
- John Cannon (historian), British historian
- John Cannon (politician), Canadian builder and politician
- John Cannon (racing driver), Canadian auto racer
- John Cannon (rugby union), Canadian rugby union player
- John Cannon (weightlifter), Scottish weightlifter
- John K. Cannon, U.S. Air Force general
- John Q. Cannon, American newspaper editor and general authority of The Church of Jesus Christ of Latter-day Saints
- Ace Cannon, American saxophonist