John Nicholls

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

• John Nickolls (1710–1745), English merchant
• John Nichols (disambiguation)
• John Nicholl (disambiguation)