John Hart (about 1711 or 1713–May 11, 1779), was a signer of the United States Declaration of Independence as a representative of New Jersey.

John Hart (Mohill, County Leitrim, Ireland March 31, 1879-April 7, 1957, Victoria, British Columbia) was premier of British Columbia, Canada, from December 9 1941 to December 29 1947.

There have been at least three American cinema actors named "John Hart". This article concerns the one who is probably best-known for temporarily replacing Clayton Moore on the television series version of The Lone Ranger.

John Hart (born July 21, 1948) is the former general manager of the Cleveland Indians and Texas Rangers.

John Hart (1706-1777) was a militia officer during King George's War and the French and Indian War from the Province of New Hampshire.

John Hart is most famous as a New Zealand rugby coach, firstly for Auckland and for the All Blacks. He began his first class coaching career for Auckland in 1982 and achieved rapid and unprecedented success with them. His coaching reign of that province continued until 1986, during which time his Auckland team won the National Provincial Championship (NPC) all but one of the years.