Jack Gold (1930–2015), British film and television director Jack Goody (1919–2015), British social anthropologist Jack Gotta (1929–2013), American-born Canadian professional football player, coach, and general manager Jack Gore (actor) (born 2005), American actor Jack Graf (1919–2009), American football and basketball player Jack Graney (1886–1978), Canadian Major League Baseball player Jack Grant (disambiguation), multiple people Jack Dylan Grazer (born 2003), American actor Jack Grealish (born 1995), English footballer Jack Greenwell (1884–1942), English footballer and manager Jack Griffo (born 1996), American actor Jack Haden (1914–1996), American football player Jack Hale (disambiguation), multiple people Jack Haley (disambiguation), multiple people Jack Halliday (American football) (1928–2000), American football player Jack Ham (born 1948), former American football linebacker Jack Hand (1912–1995), American sports reporter Jack Hanna (born 1947), American zookeeper Jack Hannah (1913–1994), American animator, writer, and director of animated shorts Jack Heflin (born 1998), American football player Jack Hennig (born 1946), Canadian singer-songwriter Jack Harper (disambiguation), multiple people Jack Herer (1939–2010), American cannabis activist Jack Hill (disambiguation), multiple people Jack Hirsch (born 1941 or 1942), American basketball player and coach Jack Hirsh (born c. 1941), Canadian clinician and scientist Jack Hobbs (1882–1963), English cricketer Jack Hoffman (American football) (1930–2001), American football player Jack Holt (disambiguation), multiple people Jack Hughes (disambiguation), multiple people Jack Huston (born 1982), English actor Jack Hyles (1926–2001), figure in the American Independent Baptist movement Jack Iddon (1902–1946), English cricketer Jack Ikin (1918–1984), English cricketer Jack Ingram (disambiguation), multiple people Jack Iroga (born 1986), sprinter from the Solomon Islands Jack Irons (born 1962), American musician Jack Iverson (1915–1973), Australian cricketer Jack Jacobs (disambiguation), multiple people Jack Jewsbury (born 1981), American soccer player Jack Johnson (disambiguation), multiple people Jack Jones (disambiguation), multiple people Jack Kamen (1920–2008), American illustrator Jack Katz (businessman) (born c. 1943), American businessman Jack Keane (born 1943), retired four-star general, former Vice Chief of Staff of the United States Army, and defense analyst Jack Kemp (1935–2009), American politician and collegiate and professional football player John F. Kennedy (1917–1963), American president, often called "Jack" Jack Kerouac (1922–1969), American novelist Jack Ketch (died 1686), English executioner employed by King Charles II Jack Kevorkian (1928–2011), American doctor Jack Kilby (1923–2005), American electrical engineer Jack Kirby (disambiguation), multiple people Jack Klugman (1922–2012), American actor Jack Kornfield (born 1945), American author and teacher in the vipassana movement in American Theravada Buddhism Jack Kotelawala (1910–1992), Sri Lankan Ambassador to the Soviet Union from 1969-1970 Jack Kruger