John Healy may refer to:
- John Healy (author) (born 1943), British author of The Grass Arena
- John Healy (bishop) (1841–1918), Irish Roman Catholic archbishop of Tuam, 1896–1918
- John Healy (cricketer) (1851–1916), Australian cricketer
- John Healy (entrepreneur) (1840–1908), 19th-century American entrepreneur
- John Healy (hurler), Irish hurler
- John Healy (Irish journalist) (1930–1991), Irish journalist for Western People and The Irish Times
- John Healy (Irish politician) (died 1995), Irish Fianna Fáil politician from Kerry
- John Healy (priest) (1850–1942), Irish Anglican priest, sometime Archdeacon of Meath
- John Edward Healy (1872–1934), Irish Journalist and Barrister
- John Farmer Healy (1900–1973), Jamaican-born Roman Catholic Bishop
- John F. Healy (c.1924–2012), British scholar, classicist and writer
- Egyptian Healy (John J. Healy, 1866–1899), American baseball player
- Jack Healy (died 1972), American actor and manager
- John Healy (Australian politician) (1894–1970)