John Hart may refer to:
- John Hart (New Jersey politician) (c. 1711–1779), delegate from New Jersey to the Continental Congress and a signer of the United States Declaration of Independence
- John Hart (spelling reformer) (died 1574), English grammarian and officer of arms
- John Hart (governor) (died 1740), British colonial administrator, Governor of the Leeward Islands, 1721–1728
- John Hart (soldier) (1706–1777), American soldier
- John Hart (doctor) (1751–1836), American surgeon and politician
- John Hart (Governor of Maryland) 18th-century American politician
- John E. Hart (c. 1820–1863), American sailor
- John Hart (South Australian colonist) (1809–1873), sailor, mill-owner and politician
- John Seely Hart (1810–1877), American author and educator
- John Hart (Canadian politician) (1879–1957), premier of British Columbia in 1940s
- Johnny Hart (1931–2007), American cartoonist
- John Hart (actor) (1917–2009), American actor
- Johnny Hart (footballer) (born 1928), British footballer
- John Hart (journalist) (born 1932), American journalist
- John Hart (speedway rider) (born 1941), English speedway rider
- John Hart (baseball) (born 1948), American baseball manager
- John Hart (rugby coach) (born 1946), New Zealand rugby coach
- John P. Hart (born 1960), American activist
- John Hart (author) (born 1965), American novelist
- John Hart (rugby union) (born 1982), British rugby player
- John Hart (classics) (1936–2011), first male winner of UK Mastermind
- John Stephen Hart (bishop) (1866–1952), bishop in the Anglican Church of Australia
- Jack Hart (state senator) (John A. Hart, Jr.), Democratic member of the Massachusetts State Senate
- John Hart, aka James L. Hart, U.S. Congressional candidate in 2004 and 2006
- Captain John Hart (Torchwood), fictional character on Torchwood
Famous quotes containing the words john and/or hart:
“Ambivalence reaches the level of schizophrenia in our treatment of violence among the young. Parents do not encourage violence, but neither do they take up arms against the industries which encourage it. Parents hide their eyes from the books and comics, slasher films, videos and lyrics which form the texture of an adolescent culture. While all successful societies have inhibited instinct, ours encourages it. Or at least we profess ourselves powerless to interfere with it.”
—C. John Sommerville (20th century)
“Unlike Boswell, whose Journals record a long and unrewarded search for a self, Johnson possessed a formidable one. His life in London—he arrived twenty-five years earlier than Boswell—turned out to be a long defense of the values of Augustan humanism against the pressures of other possibilities. In contrast to Boswell, Johnson possesses an identity not because he has gone in search of one, but because of his allegiance to a set of assumptions that he regards as objectively true.”
—Jeffrey Hart (b. 1930)