All articles starting with L
25,375 articles
Leo Gregory
Leo Gregory (born 1978, Haverfordwest, Wales) is a British actor and producer known for Bovver in Green Street Hooligans, Brian Jones in Stoned, Tristan + Isolde, Top Dog, and 2025 Terra Di Siena acting awards.
Leo Groß
Leo Gross is a German physicist at IBM Research Zurich who leads its atom and molecule manipulation group and pioneered bond-resolving AFM with CO-functionalized tips in 2009.
Léo Guignard
Léo Guignard is a French computational developmental biologist known for whole-embryo light-sheet imaging of the mouse, the open-source cell-tracking tool MaMuT, and evidence that embryonic cell signaling can be governed by cell contact area.
Leo Harrington
Leo Anthony Harrington is a mathematical logician and Professor Emeritus at the University of California, Berkeley, known for the Paris–Harrington theorem and work in recursion theory and set theory.
Leo Hirschfield
Leo Hirschfield was an Austrian immigrant confectioner credited with inventing the Tootsie Roll in New York in 1896, a founding story historians dispute, dating the candy to 1907–1909.
Leo Hollberg
Leo W. Hollberg is an American physicist known for precision laser spectroscopy and the chip-scale atomic clock, developed at NIST in Boulder before he joined Stanford in 2011.
Leo Howard
Leo Howard (born 1997) is an American actor, director, and martial artist from Newport Beach, California, known for Jack Brewer on Disney XD's Kickin' It, Ethan on Legacies, and Tate Black on Days of Our Lives.
Leo Hurvich
Leo Hurvich (1910–2009) was an American experimental psychologist who, with his wife Dorothea Jameson, built the first comprehensive quantitative model of color vision at the University of Pennsylvania.
Leo I of Galicia
Leo I of Galicia, also known as Lev Danylovych (Лев Данилович), was a Romanovych prince who ruled Galicia from 1264 and moved the capital to Lviv in 1272.
Leo I, King of Armenia
Leo I, also known as Levon I or Levon the Magnificent, was the first crowned king of the Armenian Kingdom of Cilicia, reigning from 1198 until his death in 1219.
Leo I, Prince of Armenia
Leo I (Armenian: Levon I, died 1140) was a Rubenid prince who ruled Armenian Cilicia from 1129 to 1137, expanding Rubenid control into the Cilician plain.
Leo II
Leo II, a Sicilian churchman, was the 80th pope from August 682 until his death in 683, ratifying the Sixth Ecumenical Council that condemned Monothelitism.
Leo II of Cilicia
Leo II of Cilicia (Armenian: Լեւոն Բ, Levon II; c. 1236 – 1289) was king of the Armenian Kingdom of Cilicia from 1269 or 1270 to 1289, son of Hethum I.
Leo III the Isaurian (Λέων Γ΄)
Leo III the Isaurian (Λέων Γ΄, c. 685–741), Byzantine emperor 717–741 and founder of the Isaurian dynasty; repelled the Arab siege of Constantinople with Greek fire, issued the Ecloga law code, and began Byzantine Iconoclasm.
Leo James
Leo C. James is a British molecular biologist and virologist at the MRC Laboratory of Molecular Biology, known for discovering TRIM21 and intracellular antibody immunity.
Leo Jud
Leo Jud, also Leo Judae, was an Alsatian-born Reformed pastor of St. Peter in Zurich from 1523, ranked beside Zwingli and Bullinger, best known for translating the Zurich Bible.
Leo Kadanoff
Leo Kadanoff (1937–2015) was an American theoretical physicist at the University of Chicago whose 1966 block-spin work explained universality and laid the basis for the renormalization group.
Leo Kanner
Leo Kanner (1894–1981), Austrian-born American psychiatrist at Johns Hopkins; founded US academic child psychiatry, wrote the first English textbook Child Psychiatry (1935), and described early infantile autism in 1943.
Leo Klein Gebbink
Leo Klein Gebbink, Dutch field hockey player (born 1968, Zelhem), SV Kampong; 34 caps, 6 goals; fourth at Barcelona 1992 and Olympic gold medalist with the Netherlands men's team at Atlanta 1996; husband of Jeannette Lewin.
Leo Koguan
Leo Koguan, also written KoGuan, is an Indonesian-born Chinese American billionaire who co-founded and chairs SHI International in New Jersey and is known as one of Tesla's largest individual shareholders.
Leo Komarov
Leo Komarov (Leonid Aleksandrovitš Komarov), Finnish ice hockey forward born 1987 in Narva, Estonia; NHL 491 games with Toronto and Islanders, Olympic gold 2022 and bronze 2014, two KHL Gagarin Cups; unsigned as of October 2026.
Leo Kottke
Leo Kottke, American acoustic fingerstyle guitarist from Minnesota, virtuoso of 6- and 12-string steel-string guitar; broke through with 1969's 6- and 12-String Guitar on John Fahey's Takoma Records; later duo albums with Phish's Mike Gordon.
Leo Lefrançois
Leo Lefrançois (1956–2013) was an American immunologist who chaired Immunology at the University of Connecticut and pioneered research on intestinal T cells and memory T-cell residence in tissues.
Leo Lesquereux
Leo Lesquereux (1806–1889) was a Swiss-born American bryologist and paleobotanist who described the fossil floras of North America's coal measures and joined the National Academy of Sciences in 1864.
Leo Linkovesi
Leo Linkovesi (Leo Ensio Linkovesi, Leksa), Finnish speed skater, 1947–2006. First official World Sprint champion (Eskilstuna 1972) and 500 m world record holder (38.0, Davos, 8 January 1972); sixth in the 500 m at Sapporo 1972.
Leo Loeb
Leo Loeb (1869–1959) was a German-born American pathologist who pioneered experimental cancer research in the United States, showing that hormones could bring about cancerous transformation.
Leo M. Gordon
Leo M. Gordon, also known as Leo Maury Gordon, is an American jurist serving as a senior judge of the United States Court of International Trade since 2019.
Léo Major
Léo Major (1921–2008), French-Canadian sniper of the Régiment de la Chaudière, single-handedly drove German forces from Zwolle on 13–14 April 1945, sparing the city bombardment; twice awarded the Distinguished Conduct Medal.
Leo Margets
Leo Margets (Leonor Margets), Spanish poker pro from Barcelona and Winamax Team Pro member; 2021 WSOP bracelet winner ($1,500 The Closer) and 2025 WSOP Main Event 7th-place finisher, the first woman at that final table since 1995.
Leo Marks
Leo Marks (1920-2001), also Leopold Samuel Marks, was SOE's wartime codes and ciphers chief, author of silk-based one-time WOK codes for agents, screenwriter of Peeping Tom, and author of the memoir Between Silk and Cyanide.