John Guy

John Guy may refer to:


 * John Guy (New Zealand cricketer) (born 1934), played 12 Test matches for New Zealand 1955–61
 * John Guy (English cricketer) (1916–1997), English cricketer who played first-class cricket for Oxford University, Kent and Warwickshire
 * John Guy (colonial administrator) (1568–1629), coloniser of Newfoundland
 * John Guy (historian) (born 1949), British historian of Tudor England
 * John J. Guy (born 1950), British educationalist
 * John Hudson Guy, Chief Justice of Jamaica in 1749