John Newman may refer to:

• John Henry Newman (1801–1890), Anglican and Roman Catholic theologian, cardinal and saint
• John Philip Newman (1826–1899), Bishop of the Methodist Episcopal Church

• John Newman (mayor) (c. 1829 – 1901), American politician
• John Pretyman Newman (1871–1947), British Conservative politician, MP for Enfield and Finchley
• John Newman (Australian politician) (1946–1994), Australian politician, assassinated by a rival
• Jon O. Newman (born 1932), U.S. federal judge
• John Henry Martey Newman, Ghanaian administrator and lawyer

• John Newman (ice hockey) (1910–1967), professional ice hockey player
• Johnny Newman (footballer) (born 1933), English former footballer and football manager
• Johnny Newman (born 1963), American basketball player
• Sam Newman (John Noel William Newman, born 1945), Australian television personality and ex-Australian rules footballer
• John Newman III (born 1999), American basketball player
• John Lunn Newman (1916–1976), English high jumper

• John Newman (explorer) (c. 1785 – 1838), member of the Lewis and Clark Expedition
• John Newman (architect) (1786–1859), English architect and antiquarian
• Nick Newman (naval architect) (John Nicholas Newman, born 1935), American naval architect
• John Newman (architectural historian) (1936–2023)
• John Newman (scientist) (born 1938), American electrochemical engineer
• John Newman (sculptor) (born 1952), New York sculptor
• John M. Newman, American Army intelligence officer and historian
• John Newman (singer) (born 1990), English singer
• John S. Newman, American TV soap writer

• Jack Newman (disambiguation)
• Jonathan Newman (disambiguation)
• John Neumann (disambiguation)
• Joseph Newman (disambiguation)