All articles starting with J
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John Joly
John Joly (1857–1933) was an Irish physicist and geologist at Trinity College Dublin who invented the first practical color-photography process and pioneered radium treatment of cancer.
John Joseph Bittner
John Joseph Bittner (1904–1961) was an American geneticist who discovered the "milk factor", an agent in mother's milk transmitting mammary cancer in mice, later called mouse mammary tumor virus.
John Joseph Carty
John Joseph Carty (1861–1932) was an American electrical engineer who rose from telephone operator to Vice President of AT&T, led the first transcontinental telephone line in 1915, and chaired Bell Telephone Laboratories.
John Joseph Keane
John Joseph Keane (1839–1918) was an Irish-born American Catholic bishop who served as Bishop of Richmond, first rector of The Catholic University of America, and Archbishop of Dubuque.
John Joseph Koszewnik
John Joseph Koszewnik is an American mechanical and powertrain engineer, retired chief technical officer of Achates Power, elected to the National Academy of Engineering in 2016 for engine design.
John Joseph Mathews
John Joseph Mathews (1894–1979) was an Osage writer, historian, and tribal councilman from Oklahoma whose 1932 Book-of-the-Month Club selection Wah'Kon-Tah made him one of the first American Indian authors to gain national renown.
John Joseph O’Shea Jr.
John Joseph O'Shea Jr. is an American NIH physician-scientist known for defining the JAK-STAT signaling pathway in immune cells, work that underpinned JAK inhibitor drugs.
John Joseph of Austria
John Joseph of Austria, also known as Juan José de Austria, was a Spanish general and political figure, the acknowledged illegitimate son of King Philip IV.
John Joseph Paserba Jr.
John Joseph Paserba Jr. is an American electric power engineer and president and CEO of Southern States, LLC, elected to the National Academy of Engineering in 2025.
John Joubert (serial killer)
John Joubert (1963-1996), American serial killer who murdered three boys in Maine and Nebraska, 1982-1984; identified via FBI profiling and a license-plate tip; executed in Nebraska's electric chair in 1996.
John Jovanovic
John Jovanovic is an American financier and President & Chairman of the U.S. Export-Import Bank, confirmed in 2025. Formerly Asplundh Chief Strategy Officer, DFC Balkans regional head, and Mercuria investment director.
John Joyce (Pennsylvania politician)
John Joyce, born in 1957, is an American politician and physician who has served as the Republican U.S. Representative for Pennsylvania's 13th district since 2019, after practicing dermatology for over 25 years.
John Jumper (computational biologist)
John Jumper, born 1985 in Little Rock, Arkansas, is an American computational biologist at Google DeepMind who led AlphaFold and shared the 2024 Nobel Prize in Chemistry.
John K. Bush
John K. Bush, born 1964, is an American jurist serving as a judge on the Sixth Circuit Court of Appeals since 2017, appointed by President Donald Trump.
John K. Hulm
John K. Hulm, also known as John Kenneth Hulm, was a British-born physicist who discovered the A-15 superconducting alloys and turned niobium-tin into practical high-field conductor at Westinghouse.
John K. Rose
John K. Rose is an American virologist and Professor Emeritus at Yale School of Medicine. His lab developed a 1994 system for RNA viruses and the vector for Ervebo.
John Kahn
John Kahn (1947–1996) was an American bassist, Jerry Garcia's principal collaborator outside the Grateful Dead from 1970 to 1995: Jerry Garcia Band constant member, Old & In the Way, Legion of Mary, acoustic duo partner, and session player for Bloomfield, Hooker, and Brewer & Shipley.
John Kaldor
John Kaldor is an Australian infectious-diseases epidemiologist and Scientia Professor at UNSW Sydney's Kirby Institute who helped establish national HIV surveillance and now leads work on neglected tropical diseases.
John Kander
John Kander (born 1927) is the American Broadway composer of the Kander and Ebb partnership with lyricist Fred Ebb, writing Cabaret, Chicago, Kiss of the Spider Woman, and the song New York, New York; distinct from photographer Nadav Kander and politician Jason Kander.
John Kani
John Kani (Bonisile John Kani), born 1943 in New Brighton, South Africa, is a Tony Award-winning actor, playwright, and director who co-created Sizwe Bansi is Dead and The Island with Athol Fugard and Winston Ntshona, led the Market Theatre, and later played T'Chaka in Black Panther.
John Kapelos
John Kapelos is a Canadian character actor, born in 1956, best known as the janitor Carl Reed in The Breakfast Club and Detective Donald Schanke in Forever Knight.
John Kapoor
John N. Kapoor, Indian-born founder of Insys Therapeutics, convicted of racketeering conspiracy in 2019 for bribing doctors to prescribe the fentanyl spray Subsys and defrauding insurers; sentenced to 66 months in prison in 2020.
John Kappler
John W. Kappler is an American immunologist at National Jewish Health in Denver known for identifying the T cell receptor, earning the 2015 Wolf Prize in Medicine.
John Kasich
John Kasich (born 1952) is an American Republican politician from Ohio: nine-term U.S. Representative, House Budget chairman of the 1997 Balanced Budget Act, Ohio governor 2011-2019, and the last rival to quit the 2016 Republican presidential primary against Trump.
John Kassir
John Edward Kassir, also credited as Jon Kassir, is an American actor and comedian from Baltimore, Maryland, born 1957, best known as the voice of the Crypt Keeper on HBO's Tales from the Crypt (1989-1996), plus Buster Bunny, Meeko, Scrooge McDuck, and Deadpool.
John Kastner
John Kastner (born 1969, Beaconsfield, Quebec) is the Canadian punk musician who sang for the Asexuals, founded the Doughboys and All Systems Go!, and later composed soundtracks in Los Angeles; distinct from filmmaker John Kestner and designer John Kestner.
John Kavanagh (actor)
John Kavanagh (born 1946, Dublin) is an Irish character actor, Abbey Theatre member 1967–1977, known as Cardinal Campeggio in The Tudors and the Seer in Vikings and Vikings: Valhalla, with films including Braveheart, Cal, and The Butcher Boy.
John Kavanagh (Arizona politician)
John Kavanagh is an American politician and Republican Arizona Senate Majority Leader representing District 3 who was first elected to the Arizona Legislature in 2006 and served in both the House and Senate.
John Kavanagh (martial artist)
John Kavanagh, Irish MMA coach and former fighter, head coach of SBG Ireland in Dublin and Ireland's first BJJ black belt; longtime coach of two-division UFC champion Conor McGregor, author of Win or Learn.
John Kay (flying shuttle)
John Kay of Bury (1704–c. 1779) was an English inventor and reed-maker who patented the flying shuttle in 1733, letting one weaver weave broad cloth faster and wider.