John Heffernan may refer to:
- John Heffernan (American actor) (1934–2018), American actor
- John Heffernan (British actor) (born 1981), British actor
- John Heffernan (hurler) (born 1963), Irish hurler
- John Heffernan, co-writer of Snakes on a Plane
This disambiguation page lists articles about people with the same name.
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