Sir John Fenwick, 3rd Baronet, English general and politician (b. 1645)

Sir John Fenwick, 3rd Baronet (c. 1645 – 28 January 1697) was an English Jacobite conspirator, who succeeded to the Baronetcy of Fenwick on the death of his father in 1676. He was involved in a Jacobite plot to assassinate the monarch. He was beheaded in 1697.