'''William Hart''', also '''Will''', '''Willy''', '''Bill''', or '''Billy Hart''' may refer to:
{{TOC right}} ==Arts and entertainment== * William Hart (actor) (died 1650), English Caroline actor * William Hart (painter) (1823–1894), Scottish-American painter * William Hart (singer) (1945–2022), American soul singer, member of The Delfonics * William Howard Hart (1863–1937), American painter * William Matthew Hart (1830–1908), British lithographer and bird artist * William S. Hart (1864–1946), American silent film actor, screenwriter, director, and producer * William Sterling Hart (1917–2006), American actor, better known as Robert Sterling * Will Cullen Hart (1971–2024), American musician and artist * Billy Hart (born 1940), American jazz drummer
==Judiciary== * William Hart of Livelands, Scottist jurist and 16th century Lord Advocate * William H. H. Hart (died 1918), American California attorney general * William L. Hart (1867–1962), American justice of the Supreme Court of Ohio * William Thomas Hart (1929-2023), United States federal judge
==Sports== * Bill Hart (footballer) (1923–1990), English professional footballer * Bill Hart (infielder) (1913–1968), American professional baseball third-baseman with the Brooklyn Dodgers * Bill Hart (pitcher) (1865–1936), American professional baseball pitcher * Billy Hart (baseball) (1866–1944), American professional baseball player
==Other people== * William Hart (bishop) (1904–1992), Bishop of Dunkeld * William Hart (Medal of Honor) (1866–1899), American sailor * William Hart (MP), MP for Bletchingley * William Hart (police chief) (1924–2003), Detroit Police Chief * William Hart (Tasmanian politician) (1825–1904), Tasmanian businessman * William Hart (priest) (1558–1583), Catholic martyr * William Hart, drilled the first natural gas well in the US, leading to the Fredonia Gas Light Company's formation * William C. Hart (1898–1963), United States Coast Guard member awarded the Gold Lifesaving Medal * William E. Hart (1843–1874), Union Army soldier during the American Civil War * William Ewart Hart (1885–1943), Australian aviator and dentist * William Neville Hart (1741–1804), British banker, politician and diplomat * William Stanford Hart Sr. (1925–1999), mayor of East Orange, New Jersey * William Henry Harrison Hart (1857–1934), African American attorney and professor of criminal law
==Other uses== * USCGC William Hart, a Sentinel-class cutter in the United States Coast Guard
==Fictional characters== * Bill Hart (comics), the civilian identity of the Lev Gleason Publications and Image Comics superhero Daredevil
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