John Flynn could refer to one of several people:

• The Reverend John Flynn, founder of the Royal Flying Doctor Service of Australia
• John Flynn, the director of a number of Hollywood movies such as Rolling Thunder.
• John Flynn, pseudonym of the actor John Rodney.
• John Flynn, stage actor and cabaret artiste.
• John T. Flynn, author, leader of America First Committee[1] (http://www.antiwar.com/news/?articleid=4122)