John can refer to the following:
- John: Individual who sold Dr. Emmett Brown a used pinball machine which didn't work, but would be "great for parts".
- John Barber: Writer of IDW's Back to the Future comics.
- John Crump: Reverend of Hill Valley's Assembly of Christ in 1985.
- John-Clay Scott: Stunt driver for Back to the Future and Back to the Future Part II.
- John F. Kennedy: 35th President of the United States until 1963. Riverside Drive was named John F. Kennedy Drive in his honor.
- John Hays: Director of episodes from Back to the Future: The Animated Series.
- John Loy: Writer of episodes of Back to the Future: The Animated Series.
- John Ludin: Another writer of episodes of Back to the Future: The Animated Series.
- John Ryan: Editor of Doc Brown Saves the World
- John Wilkes Booth: Actor who assassinated 16th President of the United States, Abraham Lincoln.
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