John Rea may refer to:

<!-- in approx birth date order where indicated -->

  • John Rea (horticulturalist) (died 1681), English garden writer
  • John Rea (politician) (1755–1829), United States politician
  • John Rea (Florida politician), an early mayor of Tallahassee, Florida

<!--* John Rea (Maryland politician), a politician from Maryland-->

  • John Patterson Rea (1840–1900), Minnesota judge
  • John Andrew Rea (1848–1941), American journalist and politician
  • John Huntington Rea (1909–1968), American actor better known by the stage name John Ridgely
  • John Joseph Rea (1921–2013), Northern Irish snooker player, better known as Jackie Rea
  • John Rea (papyrologist) (1933–2023), British papyrologist and academic
  • John Rea (composer) (born 1944), Canadian classical music composer
  • John Rea (snooker player) (born 1951), Scottish snooker player
  • John Rea (musician), Irish hammered dulcimer player
  • John Rea (artistic director) (born 1967), American composer and artistic director
  • John Rea (footballer) (1868–1944), Welsh footballer
  • Johnny Rea, motorcycle racer