John Fenwick

John Fenwick may refer to:

• Sir John Fenwick, 1st Baronet (c. 1570–1658), English landowner
• John Fenwick (MP for Morpeth) (d. 1644), English politician and soldier who was killed at the Battle of Marston Moor
• John Fenwick (Quaker) (1618–1683), English founder of a Quaker colony in Salem, New Jersey
• John Fenwick (Jesuit) (c. 1628–1679), English Jesuit
• Sir John Fenwick, 3rd Baronet (c. 1645–1697), English Jacobite conspirator
• John Fenwick Burgoyne Blackett (c. 1821–1856), British politician