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Alexander C. Ford

Alexander C. Ford is a British gastroenterologist, Professor at the University of Leeds and consultant at Leeds Teaching Hospitals, known for research on irritable bowel syndrome and functional dyspepsia.

Alexander C. Monteith

Alexander C. Monteith (1902–1979) was a Canadian-born American electrical engineer who rose to senior vice president of Westinghouse, led the AIEE, and won the 1962 IEEE Edison Medal.

Alexander C. Tsai

Alexander C. Tsai is an American psychiatrist and psychiatric epidemiologist at Harvard Medical School and Massachusetts General Hospital, known for a 2018 Lancet study linking police killings to mental health harm.

Alexander C. V. Hook

Alexander Coker Van Hook (born 1970) is an American jurist serving as a United States district judge for the Western District of Louisiana since 2026, appointed by President Donald Trump.

Alexander Calder

Alexander (Sandy) Calder, 1898-1976, American sculptor; invented the mobile, named by Duchamp, and the stabile; creator of the Cirque Calder wire performances and monumental bolted-steel public sculpture.

Alexander Cambridge, 1st Earl of Athlone

Alexander Cambridge, 1st Earl of Athlone (born Prince Alexander of Teck, 1874–1957), British major-general, brother of Queen Mary; Governor-General of South Africa 1923–1930 and wartime Governor General of Canada 1940–1946, hosting the Quebec Conferences.

Alexander Campbell

Alexander Campbell (1788–1866) was an American preacher and editor who, with Thomas Campbell and Barton W. Stone, led the movement that became the Disciples of Christ.

Alexander Carson

Alexander Carson (c. 1776–1844) was an Irish Presbyterian minister who seceded from the Synod of Ulster, became a Baptist pastor at Tobermore, and wrote Baptism in its mode and subjects.

Alexander Chaev

Alexander Chaev (Aleksandr Yuryevich Chayev, Александр Юрьевич Чаев), Soviet freestyle swimmer born 1962 in Voronezh; 1980 Olympic silver medalist in the 1,500 m freestyle behind Vladimir Salnikov, 1981 European 4×200 m relay champion.

Alexander Chayanov

Alexander Chayanov (Александр Чаянов) was a Soviet economist and sociologist, the leading theorist of the peasant family farm, arrested in 1930 and shot in 1937.

Alexander Chernyshev

Alexander Chernyshev (Александр Иванович Чернышёв) was a Russian cavalry general and partisan leader of the Napoleonic Wars who served as war minister from 1832 to 1852.

Alexander Cochrane

Alexander Cochrane (1758–1832) was a Scottish Royal Navy admiral who commanded British forces in the War of 1812 and issued an 1814 proclamation offering enslaved Americans freedom and resettlement in British territory.

Alexander Colsmann

Alexander Colsmann is a German physicist who has led the organic photovoltaics research group at the Karlsruhe Institute of Technology since 2008, working on organic, perovskite, and tandem solar cells.

Alexander Courage

Alexander "Sandy" Courage (1919-2008), American composer, arranger, and orchestrator who wrote the Star Trek: The Original Series main theme and Enterprise fanfare; MGM musicals arranger, Emmy winner, two-time Oscar nominee.

Alexander Crever Abbott

Alexander Crever Abbott (1860–1935) was an American physician and bacteriologist who directed the University of Pennsylvania's Laboratory of Hygiene from 1896 to 1928 and wrote the first bacteriology textbook published in the United States.

Alexander Czudaj

Alexander Czudaj (born 2002) is a German bobsleigh pilot, son of 1994 Olympic champion Harald Czudaj; he won monobob gold at the 2020 Lausanne Youth Olympics and world and European titles for BSC Sachsen Oberbärenburg.

Alexander D. Johnson

Alexander D. Johnson, known as Sandy Johnson, is an American molecular biologist at the University of California, San Francisco who studies transcriptional regulation in yeast and the fungal pathogen Candida albicans.

Alexander D. MacKerell

Alexander D. MacKerell, also known as Alex MacKerell, is an American computational chemist who develops the CHARMM force fields and drug design methods at the University of Maryland School of Pharmacy.

Alexander D. Wentzel

Alexander D. Wentzel (Александр Дмитриевич Вентцель), born 1937, is a Russian-American mathematician who co-created the Freidlin–Wentzell theory of random perturbations of dynamical systems and is emeritus professor at Tulane University.

Alexander Dalgarno

Alexander Dalgarno (1928–2015) was a British theoretical physicist who joined Harvard and the Smithsonian Astrophysical Observatory in 1967 and is widely called the father of molecular astrophysics.

Alexander Dallas Bache

Alexander Dallas Bache (1806–1867) was an American physicist who led the United States Coast Survey and was the first president of the National Academy of Sciences.

Alexander Darchiev (Александр Никитич Дарчиев)

Aleksandr Darchiyev, born in 1960, is a Russian diplomat who became ambassador to the United States in 2025, after serving as ambassador to Canada from 2014 to 2021.

Alexander De Croo

Alexander De Croo (born 1975), Belgian Open VLD politician, was Prime Minister of Belgium 2020-2025 leading the seven-party Vivaldi coalition, then became UNDP's 10th Administrator for the term 2 December 2025 to 1 December 2029.

Alexander de Savornin Lohman

Alexander Frederik de Savornin Lohman was a Dutch Calvinist politician who co-founded the Anti-Revolutionary Party in 1879, served as interior minister, and later led the Christian Historical Union.

Alexander Deineka

Alexander Deineka (Александр Дейнека; 1899–1969) was a Soviet Russian painter and sculptor whose flat, brightly colored works depict industrial labor, sport, and aviation, including The Defence of Petrograd.

Alexander Deiters

Alexander Deiters is a German-born chemical biologist and Distinguished Professor of Chemistry at the University of Pittsburgh, known for light-controlled gene expression and protein function.

Alexander Dennis

Alexander Dennis is a British bus and coach manufacturer based in Larbert, Scotland, that builds Enviro double-deck buses and Plaxton coaches; NFI Group acquired it in 2019 for £320 million.

Alexander Dennis Enviro400 City

The Alexander Dennis Enviro400 City is a double-deck bus body by Alexander Dennis, introduced in October 2015 with a glazed staircase and wrap-over rear window.

Alexander Dennis Enviro400 MMC

The Alexander Dennis Enviro400 MMC is a British low-floor double-deck bus introduced in May 2014 as a Major Model Change of the Enviro400, sold on Scania and Volvo chassis.

Alexander disease

Alexander disease, a rare GFAP-gene leukodystrophy and primary astrocyte disorder marked by Rosenthal fibers, infantile to adult forms, supportive care, and the 2026 FDA approval of zilganersen.