John Hegarty may refer to:
John Hegarty (academic), Provost of Trinity College John Hegarty (Gaelic footballer), player for Wexford John Hegarty (rugby union) (1925–2016), Scottish rugby union footballer John Hegarty (politician) (born 1947), Australian politician John Hegarty (advertising executive) (born 1944) Jack Hegarty (1888–1974), American football player
See also John Hawkins Hagarty (1816–1900), Canadian lawyer, teacher and judge John Haggerty (disambiguation)