John or Johnny Gregory may refer to:
Sportspeople John Gregory (cricketer, born 1887) (1887–1914), Hampshire cricketer John Gregory (cricketer, born 1842) (1842–1894), English cricketer Colin Gregory (John Colin Gregory, 1903–1959), British tennis player Jack Gregory (American football coach) (1927–2014), college football head coach for East Stroudsburg, Villanova, and Rhode Island John Gregory (American football coach) (1938–2022), American football coach John Gregory (footballer) (born 1954), English footballer and coach Johnny Gregory (footballer) (1905–1992), Australian footballer
Others John Gregory (scholar) (1607–1646), English orientalist John Gregory (settler) (1612–1689), founding settler of Norwalk, Connecticut John Gregory (moralist) (1724–1773), Scottish physician and writer John Munford Gregory (1804–1884), governor of Virginia, United States, 1842–1843 John Gregory (engineer) (1806—c. 1848), English engineer and member of Franklin's Lost Expedition John Milton Gregory (1822–1898), first President of the University of Illinois at Urbana-Champaign, United States, 1867–1880 John Gregory (poet) (1831–1922), trade unionist and Bristol's 'poet cobbler' John Walter Gregory (1864–1932), British geologist and explorer John Duncan Gregory (1878–1951), British diplomat dismissed for speculation in foreign currencies John Gregory (politician) (1878–1955), Canadian member of Parliament John Gregory (sculptor) (1879–1958), American sculptor John F. Gregory (1927–2009), optical worker and creator of the Gregory-Maksutov telescope design John M. Gregory (businessman), American former CEO of King Pharmaceuticals, Inc. in the 1990s John Gregory (bandleader) (1924–2020), English bandleader who often recorded under the name "Chaquito" John Gregory (priest), Anglican priest John S. Gregory, Australian professor of Chinese history
See also Jack Gregory (disambiguation)