John Black may refer to:

Sportspeople

• John Black (baseball) (1890–1962), Major League Baseball first baseman
• John Black (footballer, born 1900) (1900–1993), Scottish footballer
• John Black (footballer, born 1914) (1914–1992), Scottish footballer
• John Black (footballer, born 1957), Scottish footballer
• John Black (rugby union) (born 1951), New Zealand rugby union player
• John Black (sport shooter) (1882–1924), Canadian Olympic sport shooter
• John Black (golfer) (1879–1963), Scottish golfer

Politicians

• John Black (U.S. senator) (1800–1854), Mississippi judge and politician
• John Black (Lower Canada politician) (c. 1764–after 1819), shipbuilder and politician in Lower Canada
• John Black (New Brunswick politician) (1856–1936), lawyer and politician in New Brunswick, Canada
• John Black (merchant) (c. 1765–1823), merchant and politician in New Brunswick
• John Black (Georgia politician) (1933–2017), member of the Georgia State Senate
• John Black (Missouri politician) (born 1952), member of the Missouri House of Representatives
• John Black (Wisconsin politician) (1830–1899), Milwaukee mayor, 1878–1880
• John C. Black (1839–1915), U.S. Congressman and soldier
• John Black (Australian politician) (born 1952), Australian Senator
• John Wycliffe Black (1862–1951), Liberal MP for Harborough, Leicestershire, 1923–1924
• John H. Black in 158th New York State Legislature

Characters

• John Black (Days of Our Lives), a fictional character on the NBC soap opera Days of our Lives
• "Ugly John" Black, M*A*S*H
• John Black, character of Age of Empires III Act II
• John Black, character in Babes in Arms

Other

• John Black (martyr) (died 1566), Scottish Roman Catholic martyred on the same night David Rizzio was murdered
• John Black (privateer) (1778–1802), English captain, privateer and survivor of the mutiny on the Lady Shore
• John Black (journalist) (1783–1855), British editor of the Morning Chronicle, 1817–1843
• John Black (Canadian judge) (1817–1879), Scottish-born, judge in Canada and politician in Australia
• John McConnell Black (1855–1951), Australian botanist
• Sir John Black (businessman) (1895–1965), British motor industry executive
• John D. F. Black (1932–2018), American television writer from the 1950s to the 1980s
• John Black (cryptographer), American computer science professor
• John Black (director) (born 1940), retired British TV director
• John Black (clergyman) (1818–1882), Presbyterian clergyman who emigrated from Scotland to the Red River Colony
• John Black (composer) (c. 1520–1587), Scottish singer and composer
• John Nicholson Black (1922–2018), principal of Bedford College, University of London, 1971–1981
• J. B. Black (1883–1964), Scottish historian
• J. R. Black (1826–1880), Scottish publisher, journalist, writer, photographer, and singer
• John Melton Black (1830–1919), pioneer of Townsville, Queensland, Australia
• John Sutherland Black (1846–1923), Scottish biblical scholar
• John Logan Black (1830–1902), Confederate Army officer
• John D. Black (1883–1960), American economist
• John Janvier Black (1837–1909), American surgeon and writer