Swedish orienteer | Norwegian University of Science and Technology | Växjö: May 9, 1975 - Sombor: February 2, 2021 | Emil Wingstedt | Växjö: May 9, 1975

Dutch historian and political philosopher | Louis Marin Prize (2012), Socrates-challenge cup (2010) | University of Amsterdam | Eindhoven: May 9, 1973 - Maule

British motor specialist | London South Bank University, King Edward's School Witley | London: May 9, 1971 - January 18, 2005 | Edd China - Edward John China

American philosopher | St. John's College, DePaul University, Pennsylvania State University | Iowa City: May 9, 1968 - East Sheen: June 26, 1883 | Graham

Polish philosopher | Medal of the Centenary of Regained Independence, Fellow of Collegium Invisibile | University of Warsaw | Warsaw: May 9, 1966 - January 1, 1716

researcher | Deen Dayal Upadhyay Gorakhpur University, Indian Institute of Technology Kanpur, Stony Brook University | May 9, 1964 - January 1, 2023

Mexican philosopher | Mexico City: May 9, 1962 - Paris: November 6, 1904 | Ernesto Priani Saisó (Ernesto Priani Saiso) | Mexico City: May 9, 1962 - Paris

American chemist, engineer, entrepreneur and businessperson | Lynbrook High School, San José State University | Santa Clara County: May 9, 1960 - Philippines

German zoologist | May 9, 1958 - Mexico City: October 7, 2020 | Martin Mahner | May 9, 1958 - Mexico City: October 7, 2020

researcher at Ecole Polytechnique Fédérale de Lausanne | Kantonsschule am Burggraben, ETH Zurich | St. Gallen: May 9, 1957 - Berg: May 11, 1999 | Gian-Luca

VDNKh silver medal, Honoured Worker of Higher Professional Education of the Russian Federation, Russian government prize for science and technology (2005)

Hungarian inventor and designer (1956) | Hungarian University of Fine Arts | Budapest: May 9, 1956 - Greifensee: November 22, 2024 | Dániel Erdély (Daniel

physicist | Commander Cross of the Order of Merit of the Hungarian Republic (2025), Jedlik Ányos Award (2016), Széchenyi Prize (2015) | Zirc: May 9, 1954

scientist | Novosibirsk State Technical University | Svobodny: May 9, 1952 - August 25, 1944 | Sergey Smagin | Svobodny: May 9, 1952 - August 25, 1944

Chilean author | Columbia University, University of Chile, Pontifical Catholic University of Chile, Colegio de los Sagrados Corazones de Manquehue | Santiago

American physicist | Fellow of the American Physical Society, MacArthur Fellows Program (1984), William O. Baker Award for Initiatives in Research (1986)

Biomedical physicist of Bangladesh | University of Dhaka | May 9, 1950 - October 27, 2021 | Khondkar Siddique-e-Rabbani | May 9, 1950 - October 27, 2021

German chemist | Liebig Medal (2014) | Ludwig-Maximilian-University in Munich | Bavaria: May 9, 1949 - January 1, 1988 | Hans-Ulrich Reissig | Bavaria: May 9

Argentine mathematician, journalist and science communicator (born 1949) | Leelavati Award (2014) | University of Buenos Aires | Buenos Aires: May 9, 1949

Czech scientist | Teplice: May 9, 1948 - United States: September 13, 2003 | Josef Škach (Josef Skach) | Teplice: May 9, 1948 - United States: September 13, 2003

German university professor for mathematics and scientific computing | University of Bonn | Bottrop: May 9, 1948 - October 30, 2012 | Hans Georg Bock

Azerbaijani scientist in computational mathematics (b. 1947) | Honorary teacher (Azerbaijan) | Baku State University | Cəhri: May 9, 1947 - Charlton: January 1, 1884

biophysicist and Professor of Structural biology | Fellow of the Royal Society, DeLano Award for Computational Biosciences (2014), Nobel Prize in Chemistry

American philosopher | Guggenheim Fellowship (1985), Fellow of the American Academy of Arts and Sciences (1995) | Cornell University, Harvard University | New

Indian physicist (born 1944) | Shanti Swarup Bhatnagar Prize for Science and Technology (1989) | Sarada Vilas College, University of Mysore | Mysore: May 9

Hungarian physicist 539 | Novobátzky Károly Award (1990), Academy Award of the Hungarian Academy of Sciences (1999), Officer's Cross of the Hungarian Order

Professor of Planetary science (1943-2014) | Michael Faraday Prize (2011), Fellow of the Royal Geographical Society, Fellow of the Royal Society, Commander of

American philosopher | Jean Nicod Prize (2007) | Princeton University, University of Pennsylvania | May 9, 1943 - Massachusetts: November 9, 2003 | Stephen

9.5.1942 Ubud,† 28.1.2019 Herisau 1942 VIAF 42640562 | May 9, 1942 - January 28, 2019 | Jürg Nänni (Jurg Nanni) | May 9, 1942 - January 28, 2019

American physicist | IEEE Quantum Electronics Award (1996), Fellow of the American Physical Society, R. W. Wood Prize (1998), Adolph Lomb Medal (1972)

Philosopher and professor | Syracuse University | Memphis: May 9, 1941 - Yerseke: January 19, 1930 | John Baird Callicott | Memphis: May 9, 1941 - Yerseke

Swedish physicist | Björkén Prize (1986) | Chalmers University of Technology | Skellefteå: May 9, 1941 - Västerled: March 24, 1973 | Ingemar Lundström

American physicist (1939–2022) | Fellow of the American Physical Society | California Institute of Technology, Harvard University | Minneapolis: May 9, 1939

Romanian chemist | Order of Honour, Order of the Star of Romania | Babeș-Bolyai University | Cluj-Napoca: May 9, 1937 - Lampsacus: January 1, -0427 | Ionel

Russian mathematician | Fellow of the American Mathematical Society (2013), honorary doctorate of the University of Reims (2017) | MSU Faculty of Mechanics and

Italian physicist | Robert R. Wilson Prize (2001), Fellow of the American Physical Society, Enrico Fermi Award (2014) | Sapienza University of Rome | Rome: May

biologist, biochemist, ethologist (1935–) | Széchenyi Prize (2003) | Eötvös Loránd University | Budapest: May 9, 1935 - Chicago: November 28, 1954

Polish engineer (1934-2020) | Medal of the National Education Commission (2007), Ven Te Chow Memorial Award (2000), Gold Cross of Merit (2002) | Warsaw

Austrian botanist (1928-2004) | Frantschach-St. Gertraud: May 9, 1928 - Italy: August 18, 2004 | Erwin Lichtenegger | Frantschach-St. Gertraud: May 9, 1928

scientist | Guba District: May 9, 1928 - March 29, 1994 | Cabbar Xəlilov | Guba District: May 9, 1928 - March 29, 1994

German biophysical chemist (1927-2019) | Gold Goethe medal (2007), Bourke Award (1962), Hall of Fame of German Research (2010), Austrian Decoration for Science

scientist | Azerbaijan State Oil and Industrial University | Goychay: May 9, 1925 - February 25, 2012 | Nüsrət Xəlilov (Nusrət Xəlilov) | Goychay: May 9

French biochemist and chemist (1923-2009) | CNRS silver medal (1968) | Boulogne-Billancourt: May 9, 1923 - Le Kremlin-Bicêtre: December 30, 2009 | Gaston

British inventor | Officer of the Order of the British Empire | Thakeham: May 9, 1922 - January 4, 2019 | David Edmund Talbot Garman | Thakeham: May 9, 1922

Czech physicist (1919-2012) | Brno University of Technology | Opava: May 9, 1919 - July 26, 2012 | Čestmír Šimáně (Cestmir Simane) | Opava: May 9, 1919

Hungarian translator, writer, and contract bridge theorist (1912–1990) | Ernő Szép award (1988), Attila József Award (1981), Righteous Among the Nations

American conservative philosopher (1909–1972) | London School of Economics and Political Science, Princeton University, Balliol College | Newark: May 9, 1909

German physicist (1909–2003) | Ludwig-Maximilian-University in Munich, Humboldt University of Berlin | Frankfurt: May 9, 1909 - Copenhagen: July 26, 2003

Hindu saint (1907-1991) | Srinagar: May 9, 1907 - Srinagar: September 27, 1991 | Lakshman Joo | Srinagar: May 9, 1907 - Srinagar: September 27, 1991

English anthropologist, social scientist, linguist, visual anthropologist, semiotician and cyberneticist (1904-1980) | California Hall of Fame (2012)

French writer and philosopher (1900-1995) | Colombes: May 9, 1900 - Montmorency: January 16, 1995 | Alice Poirier | Colombes: May 9, 1900 - Montmorency: January 16, 1995

Dutch mathematician and logician (1898-1980) | Heyting algebra, Brouwer–Heyting–Kolmogorov interpretation, complete Heyting algebra, Heyting arithmetic

Romanian writer (1895–1961) | University of Vienna | Lancrăm: May 9, 1895 - Cluj-Napoca: May 6, 1961 | Lucian Blaga | Lancrăm: May 9, 1895 - Cluj-Napoca: May 6, 1961

American chemist (1893-1986) | Foreign Member of the Royal Society (1975), Priestley Medal (1977) | Harvard University | Boston: May 9, 1893 - Ames: November 7, 1986

German mathematician (1891-1930) | University of Würzburg | Tartu: May 9, 1891 - Bonn: April 5, 1930 | Axel Schur | Tartu: May 9, 1891 - Bonn: April 5, 1930

Iranian educator and inventor, founder of the first Iranian kindergarten and school for the deaf. | Yerevan: May 9, 1886 - Tehran: November 25, 1966 | Jabbar

Spanish liberal philosopher and essayist (1883-1955) | Goethe Medal for Art and Science (1932), Goethe Plaque of the City of Frankfurt (1949) | St. Stanislaus

American industrialist (1882–1967) | Labor Hall of Honor (1990), California Hall of Fame (2009) | Sprout Brook: May 9, 1882 - Honolulu: August 24, 1967

Statsrådet Mauritz Hallberg's prize (1947) | May 9, 1881 - Christchurch: December 28, 2010 | Kurt Buch | May 9, 1881 - Christchurch: December 28, 2010

SS officer and German chemist (1878–1954) | Humboldt University of Berlin, Technische Universität Berlin | Strasbourg: May 9, 1878 - Essen: October 29, 1954

Scottish chemist (1877–1952) | Davy Medal (1925), Fellow of the Royal Society of Edinburgh, Willard Gibbs Award (1926), Knight Commander of the Order of the

American mathematician (1876–1951) | Chauvenet Prize (1925) | University of Göttingen, University of Chicago | Chicago: May 9, 1876 - Harvey: May 8, 1951

American carcinologist (1874–1958) | Vassar College, George Washington University | Washington, D.C.: May 9, 1874 - Hahnemann University Hospital: March 28, 1958

academic administrator | Cornell University College of Agriculture and Life Sciences, Cornell University | White County: May 9, 1872 - Woodland: June 25, 1942

Polish chemist and economist | Commander with Star of the Order of Polonia Restituta, Cross of Independence | Lviv Polytechnic | Ocieść: May 9, 1871

Indian political leader and social reformer (1866–1915) | Companion of the Order of the Indian Empire | Elphinstone College, Rajaram College | Bombay

German zoologist (1859–1938) | Heidelberg University | Dąbrowa Chełmińska: May 9, 1858 - Berlin: April 25, 1938 | Gustav Tornier | Dąbrowa Chełmińska

German actuary (1854–1927) | Professor (1891), honorary doctor of the University of Jena (1895) | University of Jena | Copenhagen: May 9, 1854 - Georgenthal

United States chemist (1850–1936) | Perkin Medal (1915), Elliott Cresson Medal (1910), National Inventors Hall of Fame (2006), Franklin Medal (1924), IEEE

Swedish engineer (1845-1913) | Grashof Commemorative Medal (1904) | Royal Institute of Technology, Uppsala University | Orsa församling: May 9, 1845 - Oscar

Austrian member of Austrian empire council, archeologist, regional mayor, servant and nobleman | Vienna: May 9, 1838 - Graz: March 26, 1901 | Gundaker

founder of the German automobile company Adam Opel AG (1837–1895) | Rüsselsheim am Main: May 9, 1837 - Rüsselsheim am Main: September 8, 1895 | Adam Opel

French ophthalmologist | Faculté de médecine de Strasbourg | Lyon: May 9, 1836 - 3rd arrondissement of Lyon: July 11, 1912 | Ferdinand Monoyer - Charles

Russian literary critic, essayist, memoirist, translator and philosopher (1835-1918) | Kharkov Theological Seminary, Saint Petersburg Theological Academy

Scientist from the Northern Netherlands | Leiden University | Rockanje: May 9, 1822 - Haarlem: February 19, 1878 | Volkert Simon Maarten van der Willigen

Slovak university educator | Karlova Studánka: May 9, 1810 - Vienna: October 26, 1886 | Johann Hönig (Johann Honig) | Karlova Studánka: May 9, 1810

French chemist (1802-1883) | Solomiac: May 9, 1802 - Solomiac: September 20, 1883 | Pierre-Fleurus Touéry (Pierre-Fleurus Touery) | Solomiac: May 9, 1802

German philosopher | University of Tübingen | Vaihingen an der Enz: May 9, 1751 - Schorndorf: July 7, 1829 | Jacob Friedrich von Abel | Vaihingen an der Enz

French mathematician, inventor of descriptive geometry and father of differential geometry (1746-1818) | Knight Grand Cross of the Order of the Reunion (1813)

French politician and diplomat (1737-1813) | University of Strasbourg | Bouxwiller: May 9, 1737 - Strasbourg: October 25, 1813 | Christoph Wilhelm von Koch

Hungarian physicist and theologian | Martin Luther University Halle-Wittenberg | Sopron: May 9, 1652 - Lutherstadt Wittenberg: May 27, 1712 | Johann Baptist