John Rea may refer to:
- John Rea (politician), 19th century United States politician
- John Rea (snooker player), Scottish snooker player
- Jackie Rea, Northern Irish snooker player
- John Rea (musician), Irish hammered dulcimer player
- John Rea (composer) (born 1944), Canadian classical music composer
- John Rea (artistic director), American composer and artistic director
- Johnny Rea, motorcycle racer
- John Andrew Rea (1848–1941), American journalist and politician