John Breen

• John Breen (actor), actor in the film Untraceable
• John Breen (Australian politician), Australian politician
• John Breen (playwright), Irish playwright
• John Breen (RAF officer), senior officer in the Royal Air Force
• John Breen (scholar), British Japanologist
• John W. Breen, American football coach and executive
• John Breen (sailor), Irish soldier who fought in the American Civil War
• John Breen (Irish politician), Irish Labour party politician