John or Jack Nicholls may refer to: John Nicholls (controversialist) (1555–1584?), Welsh religious controversialist John Nicholls (MP) (c. 1745–1832), British Member of Parliament (MP) for Bletchingley 1783–87 and for Tregony 1796–1802 John C. Nicholls (1834–1893), United States Representative from Georgia Jack Nicholls (footballer) (1898–1970), Welsh international footballer John Walter Nicholls (1909–1970), British ambassador Jack "Putty Nose" Nicholls (1912–1981), Australian waterfront identity John Nicholls (RAF officer) (1926–2007), British air marshal John Graham Nicholls (1929–2023), British/American/Swiss physiologist/neuroscientist Johnny Nicholls (1931–1995), English footballer John Nicholls (footballer) (born 1939), Australian footballer John Nicholls (surgeon), British surgeon Jack Nicholls (born 1943), British Anglican Bishop of Sheffield John Nicholls, British Committee of 100 signatory
See also John Nickolls (1710–1745), English merchant John Nichols (disambiguation) John Nicholl (disambiguation)