John Nicholls
John or Jack Nicholls may refer to:
- John Nicholls , Welsh religious controversialist
- John Nicholls , British Member of Parliament for Bletchingley 1783-87 and for Tregony 1796-1802
- John C. Nicholls, United States Representative from Georgia
- Jack Nicholls , Welsh international footballer
- John Walter Nicholls, British ambassador
- Jack "Putty Nose" Nicholls, Australian waterfront identity
- John Nicholls , British air marshal
- John Graham Nicholls, British/American/Swiss physiologist/neuroscientist
- Johnny Nicholls, English footballer
- John Nicholls , Australian footballer
- John Nicholls, British surgeon
- Jack Nicholls, British Anglican Bishop of Sheffield
- John Nicholls, British Committee of 100 signatory