Jack, Johnny, or John Ball may refer to:

• John Ball (priest) (c. 1338 – 1381), English radical priest and leader of 1381 Peasants' Revolt
• John Ball (minister) (1665–1745), English Presbyterian minister
• John Ball (clergyman) (before 1760 – after 1795), African-American minister from Nova Scotia
• John Ball (bishop) (1934–2016), British Anglican bishop

• Johnny Ball (born 1938), English children's television presenter
• John Ball (musician) (born 1990), American Christian musician

• John Ball (16th-century MP) (c.1518–1556), English Member of Parliament (MP) for Norwich
• John Ball (assemblyman) (1756–1838), American soldier and politician
• John Thomas Ball (1815–1898), Irish barrister and politician, MP for Dublin University 1868–1875
• John Ball (naturalist) (1818–1889), Irish naturalist and politician, MP for County Carlow 1857–1880
• John Ball (pioneer) (1794–1884), American pioneer and state politician
• John Ball (Drogheda MP) (c. 1754–1813), MP for Drogheda in the Irish House of Commons

• John Ball (golfer) (1861–1940), English amateur golfer; winner of The Open Championship
• Jack Ball (footballer, born 1900) (1900–1989), English footballer for Bury and England
• Jack Ball (footballer, born 1907) (1907–1976), English football forward
• Jack Ball (footballer, born 1923) (1923–1999), English football goalkeeper
• John Ball (footballer, born 1925) (1925–1998), English footballer for Bolton Wanderers
• John Ball (soccer, born 1972), American footballer for Rochester Rhinos

• John Ball (Puritan) (1585–1640), English author and scholar
• John Ball (pioneer) (1794–1884), American explorer
• John Ball (geologist) (1872–1941), English geologist
• John Ball (novelist) (1911–1988), American novelist
• Sir John M. Ball (born 1948), English mathematician
• John Ball (cognitive scientist) (born 1963), American cognitive scientist

• John Bull (disambiguation)
• John Ball Primary School, primary school in Blackheath, London