All articles starting with J
20,615 articles
Jack Greenblatt
Jack Greenblatt, or Jack F. Greenblatt, is a Canadian molecular biologist and University Professor at the University of Toronto known for the first genome-wide protein interaction network.
Jack Griffo
Jack Davis Griffo (born 1996, Orlando, Florida) is an American actor, musician, and producer known as Max Thunderman on Nickelodeon's The Thundermans, its 2024 revival film, and the Undercover spin-off, plus Alexa & Katie and Super Sons voice work.
Jack Gunthard
Jack Günthard (Jakob Günthard, 1920-2016), Swiss artistic gymnast, 1952 Helsinki horizontal bar Olympic champion and team silver medalist; later Italian and Swiss national coach and 'Fit mit Jack' fitness TV pioneer.
Jack H. Freed
Jack H. Freed (J. H. Freed) is an American physical chemist and biophysicist at Cornell University, on its faculty since 1963, known for building electron spin resonance into a quantitative tool for studying membranes and proteins.
Jack H. Medalie
Jack H. Medalie (1922–2006) was a South African-born physician and epidemiologist who founded family medicine at Case Western Reserve University and directed the Israeli Ischemic Heart Disease Study from 1963.
Jack H. Mendelson
Jack H. Mendelson (Jack Harold Mendelson, 1929–2007) was an American psychiatrist and endocrinologist who led the Alcohol and Drug Abuse Research Center at McLean Hospital and helped establish alcoholism as a medical disorder.
Jack H. Oppenheimer
Jack H. Oppenheimer (1927–2006) was a German-born American endocrinologist who defined how thyroid hormone acts in cells, set the levothyroxine replacement dose for hypothyroidism, and led the American Thyroid Association in 1986.
Jack H. Wernick
Jack H. Wernick (Jack Harry Wernick, 1923–2006) was an American materials scientist who led device-materials research at Bell Laboratories and joined the National Academy of Engineering in 1979.
Jack H. Westbrook
Jack H. Westbrook, born Jack Hall Westbrook in 1924, is an American metallurgist at General Electric known for early work on intermetallic compounds and for computerized materials property databases.
Jack Haley
Jack Haley (John Joseph Haley Jr.) was an American vaudeville, stage, radio, and film actor best known as the Tin Man in The Wizard of Oz (1939).
Jack Halpern (inorganic chemist)
Jack Halpern (1925–2018) was a Polish-born inorganic chemist at the University of Chicago, a founder of mechanistic organometallic chemistry and homogeneous catalysis whose group made the first homogeneous transition-metal hydrogenation catalyst in 1961.
Jack Handey
Jack Handey (born 1949), American humorist, creator of Deep Thoughts by Jack Handey on Saturday Night Live, Unfrozen Caveman Lawyer, and Toonces; New Yorker writer since 1987 and novelist (The Stench of Honolulu).
Jack Hanna
Jack Hanna (born 1947, Knoxville, Tennessee) is an American zookeeper and TV personality, director of the Columbus Zoo 1978–1992 and Director Emeritus, known for Letterman appearances and shows Animal Adventures, Into the Wild, and Wild Countdown.
Jack Harbaugh
Jack Harbaugh, born in Crestline, Ohio, is a retired college football coach; head coach at Western Michigan (1982-86) and Western Kentucky (1989-2002), winning the 2002 I-AA national title; father of coaches John and Jim Harbaugh.
Jack Hargreaves
Jack Hargreaves OBE (1911-1994), English television presenter and Southern Television executive, creator and host of Out of Town (1960-1981, later Old Country on Channel 4) and the children's series How?
Jack Harkness
Captain Jack Harkness, played by John Barrowman, is a fictional Time Agent from Doctor Who (2005) and the spin-off Torchwood; an immortal, pansexual companion created by Russell T Davies, first appearing in "The Empty Child".
Jack Harlan
Jack Rodney Harlan (1917–1998) was an American botanist and agronomist who studied cultivated plants' evolution, taught at the University of Illinois, and joined the National Academy of Sciences in 1972.
Jack Harlow
Jack Harlow (Jackman Thomas Harlow, born 1998) is an American rapper from Louisville, Kentucky, signed to Generation Now/Atlantic. Known for 'Whats Poppin,' three Hot 100 No. 1s ('Industry Baby,' 'First Class,' 'Lovin On Me'), and albums through Monica (2026).
Jack Harriman Winters
Jack Harriman Winters is an American wireless and optical communications engineer who spent over two decades at AT&T Labs-Research pioneering smart antennas and MIMO, earning the 2012 IEEE Eric E. Sumner Award.
Jack Harrison (footballer, born 1996)
Jack David Harrison (born 1996, Stoke-on-Trent) is an English winger, 2016 MLS SuperDraft first pick, Leeds United promotion winner, later Everton and Fiorentina loanee, now a New England Revolution Designated Player.
Jack Hatfield
Jack Hatfield (John Gatenby Hatfield, 1893-1965), English swimmer from Middlesbrough; double silver and relay bronze at Stockholm 1912, five world records 1912-1914, four Olympics, Hall of Fame inductee.
Jack Hawkins
Jack Hawkins (born John Edward Hawkins) was an English actor, a top British film star of the 1950s known for The Cruel Sea, Ben-Hur, and Lawrence of Arabia.
Jack Hemingway
Jack Hemingway (John Hadley Nicanor Hemingway, 1923-2000), Ernest Hemingway's eldest son with Hadley Richardson; OSS captain in occupied France, POW, Idaho Fish and Game commissioner, fly-fishing conservationist, and author of Misadventures of a Fly Fisherman.
Jack Hendry (footballer, born 1995)
Jack William Hendry (born 1995, Glasgow) is a Scottish centre-back at Al-Ettifaq and Scotland, formerly of Celtic, KV Oostende, and Belgian champions Club Brugge, a Euro 2020 and 2024 and 2026 World Cup squad defender.
Jack Herer
Jack Herer (1939-2010), American hemp and cannabis activist, author of The Emperor Wears No Clothes, co-founder of HEMP, backer of California Proposition 215, and namesake of the Sensi Seeds Jack Herer strain.
Jack Hermansson
Jack Hermansson, "The Joker", Swedish-born UFC welterweight (formerly middleweight) based in Oslo, 24-10-0, 11 KO and 6 submission wins; notable wins over Jacare Souza and Kelvin Gastelum.
Jack Heslop-Harrison
Jack Heslop-Harrison (1920–1998) was a British botanist, elected Fellow of the Royal Society in 1970, who directed the Royal Botanic Gardens, Kew, from 1971 to 1976.
Jack Hickey
Jack Hickey (John Joseph "Darb" Hickey, 1887-1950), Australian dual-code rugby international: 1908 Wallaby tourist, Olympic rugby union gold medalist at London 1908, then Glebe and Balmain rugby league Test player in 1910.
Jack Higgins
Jack Higgins, pen name of Henry (Harry) Patterson (1929–2022), British thriller writer of 85 novels including The Eagle Has Landed; also wrote as Martin Fallon, Hugh Marlowe, and James Graham; 250 million copies sold.
Jack Hirsh
Jack Hirsh (born January 7, 1935, in Melbourne) is an Australian-born physician-scientist at McMaster University whose work on heparin monitoring and the INR shaped anticoagulant therapy.