Notable people
Notable peoplePoliticians and leadersScientists, inventors, and mathematiciansWriters and journalistsReligious figuresRevolutionaries and activistsPhilosophers and social scientistsWritersScientists, inventors and mathematiciansMusicians and composersPhilosophers, historians, political and social scientistsVisual artistsSports figuresMilitary leaders and theoristsRebels, revolutionaries and activistsEntertainersLeaders and politiciansExplorersDirectors, producers and screenwritersBusinesspeopleScientists and inventorsMathematiciansJournalistsArtistsMusiciansCriminalsFilmmakers
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- J. A. HobsonEnglish economist, social scientist and critic of imperialism (1858–1940)
- J. B. PriestleyEnglish writer (1894–1984)
- J. B. Priestley's Time PlaysThe English author J. B. Priestley wrote a number of dramas during the 1930s and 40s, whic
- J. Baird CallicottAmerican philosopher (born 1941)
- J. Edgar HooverAmerican law enforcement administrator (1895–1972)
- J. Hartwell HarrisonAmerican surgeon (1909–1984)
- J. King GordonJohn King Gordon CM (1900–1989) was a Canadian Christian minister, editor, United Nations
- J. L. SchellenbergCanadian philosopher of religion (born 1959)
- J. Lewis BonhoteJohn Lewis James Bonhote M.A., F.L.S., F.Z.S., M.B.O.U. (13 June 1875 – 10 October 1922) w
- J. P. MalloryAmerican archaeologist (born 1945)
- J.C. WylieAmerican rear admiral (1911–1993)
- Jabbar ChoheiliIranian Mandaean priest (1923–2014)
- Jack FinneyAmerican author (1911–1995)
- Jack GoodyEnglish social anthropologist (1919–2015)
- Jack HirschmanAmerican poet and social activist (1933–2021)
- Jack P. GreeneJack Philip Greene (born August 12, 1931) is an American historian, specializing in Coloni
- Jacob EgharevbaChief Jacob Uwadiae Egharevba MBE (1893–1981) was a Bini historian and traditional chief w
- Jacob Georg AgardhSwedish botanist, phycologist, and taxonomist (1813–1901)
- Jacob HübnerGerman entomologist (1761–1826)
- Jacob L. MeyJacob Louis Mey (30 October 1926 – 10 February 2023) was a Dutch-born Danish professor of
- Jacob LittleJacob Little (March 17, 1794 – March 28, 1865) was an early 19th-century Wall Street inves
- Jacob Theodor KleinGerman scholar (1685–1759)
- Jacqueline de Montbel d'EntremontJacqueline de Montbel d'Entremont (16 February 1541 – 17 December 1599) was a French court
- Jacques Bernard HombronJacques Bernard Hombron (1798–1852) was a French naval surgeon and naturalist.
- Jacques CamatteJacques Camatte (born 1935) is a French writer, philosopher, former Marxist theoretician a
- Jacques CharlesFrench inventor, scientist and mathematician (1746–1823)
- Jacques Charles François SturmFrench mathematician (1803–1855)
- Jacques Crétineau-JolyFrench journalist and historian (1803–1875)
- Jacques LoebJacques Loeb (; German: ; April 7, 1859 – February 11, 1924) was a German-born American ph
- Jacques RouxFrench Catholic priest and revolutionary (1752–1794)
- Jacques-Bénigne BossuetFrench bishop and theologian (1627–1704)
- Jadav PayengIndian environmentalist (born 1959)
- Jadunath SarkarIndian historian (1870–1958)
- Jagannath ShankarshetIndian reformer, philanthropist during British Raj (1831–1865)
- Jagdamba DeviIndian artist (1901–1984)
- JagdschlossA Jagdschloss is a hunting lodge in German-speaking countries. It is a schloss set in a wi
- JahnulaJahnula is a genus of aquatic fungi in the family Aliquandostipitaceae. The genus was firs
- Jainal Antel Sali Jr.Jainal Antel Sali Jr. (June 1, 1964 – January 16, 2007) was a Filipino militant who was a
- Jaishankar PrasadIndian (Hindi) litterateur and writer (1889–1937)
- Jama'at al-Tawhid wal-JihadJordanian/Iraqi Salafi jihadist militant group (1999–2004)
- James A. HerneAmerican dramatist (1839–1901)
- James Augustus HickyIrish journalist (1740-1802)
- James B. PollackJames Barney Pollack (July 9, 1938 – June 13, 1994) was an American astrophysicist who wor
- James Bevel1960s civil rights movement strategist (1936–2008)
- James BurnhamAmerican philosopher (1905–1987)
- James C. ScottAmerican political scientist and anthropologist (1936–2024)
- James ConnollyIrish republican, trade unionist and revolutionary (1868–1916)
- James David ForbesScottish physicist and glaciologist (1809–1868)
- James De Carle SowerbyJames De Carle Sowerby (5 June 1787 – 26 August 1871) was a British mineralogist, botanist
- James E. WebbAmerican government official (1906–1992)
- James Ferdinand Morton Jr.American anarchist (1870–1941)
- James Francis StephensJames Francis Stephens (16 September 1792 – 22 December 1852) was an English entomologist
- James Freeman GilbertAmerican geophysicist (1931–2014)
- James George FrazerScottish social anthropologist and folklorist (1854–1941)
- James George Smith NeillBritish military officer (1810–1857)
- James GillrayEnglish artist (1756–1815)
- James Graham CooperJames Graham Cooper (June 19, 1830 – July 19, 1902) was an American surgeon and naturalist
- James GuillaumeSwiss anarchist (1844–1916)
- James H. WareJames Hutchinson Ware (October 27, 1941 – April 26, 2016) was an American biostatistician
- James Harrington (author)English political theorist (1611–1677)
- James HerriotBritish veterinary surgeon (1916–1995)
- James J. WilliamsJames J. Williams (1853-April 19, 1926) was an English-born photographer in the Kingdom of
- James Jesus AngletonCentral Intelligence Agency officer (1917–1987)
- James Lawton CollinsJames Lawton Collins (December 10, 1882 – June 30, 1963) was an American major general of
- James Lawton Collins Jr.James Lawton Collins Jr. (5 November 1917 – 6 May 2002) was a brigadier general in the U.S
- James Leigh JoynesEnglish journalist and activist (1853–1893)
- James M. BardeenAmerican physicist (1939–2022)
- James Marsh (chemist)James Marsh (2 September 1794 – 21 June 1846) was a British chemist who invented the Marsh
- James Maynard (mathematician)British mathematician (born 1987)
- James MillScottish economist (1773–1836)
- James Moore Sr.James Moore Sr. (c. 1640 – c. 1706) was a military officer and colonial administrator who
- James Prendergast (judge)Sir James Prendergast GCMG (10 December 1826 – 27 February 1921) was the third Chief Justi
- James PrinsepEnglish orientalist and antiquary (1799–1840)
- James RattrayBritish soldier and artist (1818–1854)
- James RennellEnglish geographer, historian and oceanographer (1742–1830)
- James Thomson (engineer)James Thomson FRS FRSE LLD (16 February 1822 – 8 May 1892) was a British engineer and phys
- James TissotFrench painter and illustrator (1836–1902)
- James Van AllenAmerican space physicist (1914-2006)
- James William McClendon Jr.James William McClendon Jr. (1924–2000) was a Christian theologian and ethicist in the Ana
- James WolfeBritish Army officer (1727–1759)
- Jamgön Ju Mipham GyatsoTibetan Buddhist master (1846–1912)
- Jamgon KongtrulTibetan Buddhist scholar (1813–1899)
- Jamini RoyIndian artist (1887–1972)
- Jammu and Kashmir (princely state)Princely state in South Asia (1846–1947)
- Jammu and Kashmir (state)State administered by India (1952–2019)
- Jamyang Khyentse WangpoTibetan educator, scholar, and tertön (1820–1892)
- Jan Brueghel the ElderFlemish painter (1568–1625)
- Jan GralewskiJan Gralewski (3 March 1912 – 4 July 1943) was a Polish philosopher, essayist and soldier.
- Jan MatejkoPolish painter (1838–1893)
- Jan Svatopluk PreslJan Svatopluk Presl (4 September 1791 – 6 April 1849) was a Czech natural scientist.
- János KornaiHungarian economist (1928–2021)
- Janowska concentration campNazi concentration camp in Ukraine (1941–1944)
- Japan Socialist Party (1906)The Japan Socialist Party (日本（にっぽん/にほん）社会党（しゃかいとう）, Nippon/Nihon shakai-tō) was the first
- Japanese colonial empireJapanese territorial conquests (1895–1945)
- Japanese occupation of SingaporePart of World War 2 (1942–1945)
- Jared PolisGovernor of Colorado since 2019 (born 1975)
- Jaroslav KrejčíJaroslav Krejčí (27 June 1892 – 18 May 1956) was a Czech lawyer and Nazi collaborator. He
- Jason BrennanAmerican philosopher and business professor (born 1979)
- Jason HickelEconomic anthropologist (born 1982)
- Jatindra Nath DasIndian revolutionary (1904–1929)
- Jaunpur SultanateMedieval kingdom in India (c. 1394–1494)
- JayadevaVaishnava Sanskrit poet (c. 1170–1245)
- Jayanto Nath ChaudhuriIndian Army general (1908–1983)
- Jayaprakash NarayanIndian independence activist (1902–1979)
- Je TsongkhapaTibetan monk and yogi (1357–1419)
- Jean ChacornacJean Chacornac (21 June 1823 – 23 September 1873) was a French astronomer and discoverer o
- Jean ClottesJean Clottes is a prominent French prehistorian. He was born in the French Pyrenees in 193
- Jean de La FontaineFrench fabulist and poet (1621–1695)
- Jean GersonFrench scholar, educator, reformer and poet (1363–1429)
- Jean MaitronJean Maitron (1910–1987) was a French historian specialist of the labour movement.
- Jean MeslierFrench Catholic priest (1664–1729)
- Jean René Constant QuoyJean René Constant Quoy (10 November 1790 in Maillé – 4 July 1869 in Rochefort) was a Fren
- Jean-Antoine ChaptalFrench chemist and physician (1756–1832)
- Jean-Baptiste NouletJean-Baptiste Noulet (1 May 1802 – 24 May 1890) was a French scientist and naturalist who
- Jean-Baptiste Tavernier17th-century French gem merchant and traveler (1605–1689)
- Jean-Baptiste-Adolphe CharrasJean-Baptiste Adolphe Charras (7 January 1810 in Phalsbourg – 23 January 1865 in Basel) wa
- Jean-Baptiste-François PitraJean-Baptiste-François Pitra, OSB (French pronunciation: ; 1 August 1812 – 9 February 1889
- Jean-Charles PichegruFrench Army officer (1761–1804)
- Jean-Étienne MontuclaJean-Étienne Montucla (5 September 1725 – 18 December 1799) was a French mathematician and
- Jean-François ChampollionFrench classical scholar, decipherer of Egyptian hieroglyphs (1790–1832)
- Jean-Luc MargotJean-Luc Margot (born 1969) is a Belgian-born astronomer and a UCLA professor with experti
- Jehan Georges VibertJehan Georges Vibert or Jean Georges Vibert (30 September 1840 – 28 July 1902) was a Frenc
- Jerome XavierSpanish jesuit missionery (1549–1617)
- Jerry BrownGovernor of California (1975–1983; 2011–2019)
- Jerzy TabeauPolish Auschwitz escapee (1918–2002)
- Jewel v. National Security AgencyUS 9th Circuit Court of Appeals case (2011)
- Jewish Territorial OrganizationJewish political movement (1903–1925)
- Ji GongChinese Buddhist monk (1130–1209)
- Jiang ShigongChinese legal and political theorist (born 1967)
- Jigme LingpaNyingma Buddhist Lama (1730–1798)
- Jim CorbettAnglo-Indian hunter, naturalist and author (1875–1955)
- Jim Powell (historian)Jim Powell is an American author and senior fellow at the Cato Institute, a libertarian th
- JinulKorean Buddhist monk (1158–1210)
- Jinzaburō MasakiJapanese general (1876–1956)
- Jo LabadieAmerican labor leader (1850–1933)
- Joachimsthal, Brandenburgis a small town in the district of Barnim, in Brandenburg, Germany. It is situated within
- Joaquín AscasoJoaquín Ascaso Budría (5 June 1906 – 12 March 1977) was an Aragonese anarcho-syndicalist a
- Joaquin Mazdak LuttingerAmerican physicist (1923-1997)
- Jodi DeanAmerican political theorist (born 1962)
- Joel Joffe, Baron JoffeBritish lawyer (1932–2017)
- Joel KovelAmerican scholar and author (1936–2018)
- Joël ScherkFrench theoretical physicist (1946–1980)
- Joel SlemrodAmerican economist and academic (born 1951)
- Johann BauhinJohann (or Jean) Bauhin (12 December 1541 – 26 October 1613) was a Swiss botanist, born in
- Johann Christian Daniel von SchreberGerman naturalist (1739–1810)
- Johann EckGerman Catholic theologian (1486–1543)
- Johann Friedrich GmelinGerman naturalist, chemist, and biologist (1748–1804)
- Johann Friedrich MeckelGerman anatomist (1781–1833)
- Johann Friedrich von BrandtGerman naturalist (1802–1879)
- Johann Friedrich von EschscholtzBaltic German explorer and scientist (1793–1831)
- Johann Gottlob Theaenus SchneiderGerman classicist and naturalist (1750–1822)
- Johann Heinrich Friedrich LinkGerman naturalist and botanist (1767–1851)
- Johann HermannFrench physician and naturalist (1738–1800)
- Johann Jakob KaupGerman naturalist (1803–1873)
- Johann Lukas SchönleinJohann Lukas Schönlein (30 November 1793 – 23 January 1864) was a German naturalist, and p
- Johann MostGerman-American anarchist (1846–1906)
- Johann PlengeGerman sociologist (1874–1963)
- Johann ReuchlinGerman humanist and scholar (1455–1522)
- Johann Ruchrat von WeselGerman theologian (died 1481)
- Johann Schweikhard von KronbergJohann Schweikhard von Kronberg (15 July, 1553 – 17 September, 1626) was the Archbishop-El
- Johann Tserclaes, Count of TillyCatholic marshal of the Thirty Years' War (1559–1632)
- Johannes BurmanJohannes Burman (26 April 1707 in Amsterdam – 20 February 1780), was a Dutch botanist and
- Johannes HassebroekJohannes Hassebroek (11 July 1910, in Halle, Saxony-Anhalt – 17 April 1977, in Westerstede
- Johannes HolzmannJohannes Holzmann (30 October 1882 – 28 April 1914) was a German anarchist writer and acti
- Johannes Müller ArgoviensisSwiss botanist (1828–1896)
- Johannes ReinkeJohannes Reinke (February 3, 1849 – February 25, 1931) was a German botanist and philosoph
- Johannes von HansteinJohannes Ludwig Emil Robert von Hanstein (15 May 1822 – 27 August 1880) was a German botan
- John B. TaylorAmerican economist (born 1946)
- John Bellamy FosterAmerican academic (born 1953)
- John BergerBritish painter, writer and art critic (1926 - 2017)
- John BlenkinsopJohn Blenkinsop (1783 – 22 January 1831) was an English mining engineer and an inventor of
- John C. WellsBritish phonetician (born 1939)
- John Charles HerriesJohn Charles Herries PC (November 1778 – 24 April 1855), known as J. C. Herries, was a Bri
- John Clive WardAnglo-Australian physicist (1924–2000)
- John ComaroffSouth African anthropologist (born 1945)
- John Cotton (minister)Puritan minister in England, America (1585–1652)
- John Courtney MurrayAmerican Catholic priest, philosopher, and theologian (1904–1967)
- John Dawson (surgeon)John Dawson (1734 – 19 September 1820) was both an English mathematician and physician. He
- John DoughtyJohn Doughty (July 25, 1754 – September 16, 1826) was an American military officer who bri
- John Eatton Le ConteJohn Eatton Le Conte Jr. (sometimes John Eatton LeConte or John Eaton Leconte) (February 2
- John Edward Anderson (psychologist)John Edward Anderson (1893–1966) was an American psychologist. He was the 52nd president o
- John Edward GrayBritish zoologist (1800–1875)
- John Edwards HolbrookJohn Edwards Holbrook (December 31, 1796 – September 8, 1871) was an American zoologist, h
- John EndecottGovernor of Massachusetts Bay Colony (1600–1664)
- John F. KnottJohn Francis Knott (December 7, 1878 – February 16, 1963) was an Austro-Hungarian and Amer
- John FisherBishop of Rochester (c.1469–1535)
- John Forbes RoyleJohn Forbes Royle (10 May 1798 – 2 January 1858), British botanist and teacher of materia
- John Frederick MillerEnglish illustrator and ornithologist (1759–1796)
- John GamgeeJohn Gamgee (1831–1894) was a British veterinarian and inventor. He specialised in the con
- John George II, Prince of Anhalt-DessauJohn George II (17 November 1627 – 7 August 1693) was a German prince of the House of Asca
- John Gilbert BakerJohn Gilbert Baker FRS (13 January 1834 – 16 August 1920) was an English botanist. His son
- John GouldEnglish ornithologist (1804–1881)
- John Haldane (philosopher)Scottish philosopher (born 1954)
- John HancockAmerican Founding Father (1737–1793)
- John Henry HollandAmerican researcher in genetic algorithms (1929–2015)
- John Henry NewmanEnglish philosopher and cardinal (1801–1890)
- John Henry PoyntingEnglish physicist (1852–1914)
- John Holloway (sociologist)Irish sociologist (born 1947)
- John Holt (American educator)American writer and educator (1923–1985)
- John HopkinsonBritish physicist and electrical engineer (1849–1898)
- John Hubbard (physicist)British physicist (1931–1980)
- John IkenberryAmerican political scientist (born 1954)
- John James AbertJohn James Abert (17 September 1788 – 27 January 1863) was an American soldier. He headed
- John JayAmerican Founding Father (1745–1829)
- John Kay (spinning frame)John Kay was an English inventor best known for the development of the spinning frame in 1
- John King (explorer)John King (15 December 1838 – 15 January 1872) was an Irish-born British soldier who achie
- John King (police officer)John King (1830-1881) was a police constable at the Battle of the Eureka Stockade who was
- John Latham (ornithologist)English physician, naturalist and author (1740–1837)
- John LindleyEnglish botanist, gardener and orchidologist (1799–1865)
- John Lucas (philosopher)John Randolph Lucas FBA (18 June 1929 – 5 April 2020) was a British philosopher.
- John MachinEnglish mathematician (1686–1751)
- John Macqueen CowanJohn Macqueen Cowan FRSE CBE (1891–1960) was a prominent Scottish botanist in the mid 20th
- John Martin (painter)English painter, engraver and illustrator (1789–1854)
- John Mason (governor)Captain John Mason (1586–1635) was an English sailor and colonist who was instrumental to
- John MauchlyAmerican physicist and computer scientist (1907–1980)
- John MearsheimerAmerican political scientist (born 1947)
- John Mercer (scientist)John Mercer JP (21 February 1791 – 30 November 1866) was an English dye and fabric chemist
- John MorleyBritish Liberal statesman (1838–1923)
- John O'Connell (MP)John O'Connell JP DL (24 December 1810 – 24 June 1858) was one of seven children (the thir
- John Paul (colonial administrator)Sir John Warburton Paul, GCMG, OBE, MC (29 March 1916 – 31 March 2004) was a British colon
- John Percival (botanist)John Percival FLS (1863–1949) was an English botanist and professor of agricultural botany
- John R. CommonsAmerican economist and historian (1862–1945)
- John RalfsJohn Ralfs (13 September 1807 – 14 July 1890) was an English botanist. Born in Millbrook,
- John Row (reformer)John Row (c1525–1580), was a Scottish reformer, born around 1526 near Dunblane. He was edu
- John RuskinEnglish polymath (1819–1900)
- John Sherwin CrosbyAmerican tax reformer (1842–1914)
- John Stackhouse (botanist)John Stackhouse (1742 – 22 November 1819) was an English botanist, primarily interested in
- John TennielBritish illustrator and cartoonist (1820–1914)
- John TrumbullAmerican artist (1756–1843)
- John V. DittemoreJohn Valentine Dittemore (September 30, 1876 - May 10, 1937) was director of The First Chu
- John VennEnglish logician and philosopher (1834–1923)
- John W. CahnJohn Werner Cahn (January 9, 1928 – March 14, 2016) was an American scientist and recipien
- John Wesley PowellAmerican geologist and explorer (1834–1902)
- John Whitehead (explorer)John Whitehead (30 June 1860 – 2 June 1899) was an English explorer, naturalist and profes
- John WhorfJohn Whorf (1903–1959) was an American realist artist who is best known for his watercolor
- John William WaterhouseEnglish painter (1849–1917)
- John ZerzanAmerican philosopher and author (born 1943)
- Join (Unix)join is a command in Unix and Unix-like operating systems that merges the lines of two sor
- Jon Bentley (computer scientist)American computer scientist (born 1953)
- Jonah's Gourd VineJonah's Gourd Vine is Zora Neale Hurston's 1934 debut novel. The novel is a semi-autobiogr
- Jonathan SpencerBritish social anthropologist and academic (born 1954)
- Jonathon PorrittBritish environmentalist (born 1950)
- Jordan PetersonCanadian psychologist (born 1962)
- Jorge V. JoséJorge V. José is a Mexican/American physicist born in Mexico City. Currently the James H.
- José Carlos MariáteguiPeruvian writer and academic (1894–1930)
- José María ArizmendiarrietaSpanish Catholic priest and Mondragón cooperative movement founder (1915–1976)
- Jose Maria SisonFilipino communist leader (1939–2022)
- José María SobralAlférez de Navío José María Sobral (April 14, 1880 – April 14, 1961) was an Argentine expl
- José Ortega y GassetSpanish philosopher and essayist (1883–1955)
- José StreelJournalist, Rexist (1911–1946)
- José, Prince of BrazilDom José, Prince of Brazil, Duke of Braganza (Portuguese pronunciation: ; 20 August 1761 –
- Josef August SchultesJosef (Joseph) August Schultes (15 April 1773 in Vienna – 21 April 1831 in Landshut) was a
- Josef PieperGerman Catholic philosopher (1904–1997)
- Josef StefanCarinthian Slovene physicist, mathematician and poet (1835–1893)
- Josep Llunas i PujalsCatalan anarchist (1852–1905)
- Joseph BerksonJoseph Berkson (14 May 1899 – 12 September 1982) was trained as a physicist (BSc 1920, Col
- Joseph BeuysGerman artist and art theorist (1921–1986)
- Joseph BonaparteKing of Naples (1806–08) and Spain (1808–13)
- Joseph CalasanzSpanish priest, educator, founder of the Piarists, & saint (1557–1648)
- Joseph CampbellAmerican mythologist, writer, and lecturer (1904–1987)
- Joseph DéjacqueFrench writer (1821–1864)
- Joseph GaertnerGerman botanist (1732-1791)
- Joseph GörresGerman writer and philosopher (1776–1848)
- Joseph HenrichAmerican evolutionary biologist (born 1968)
- Joseph HighmoreJoseph Highmore (13 June 1692 – 3 March 1780) was an English painter of portraits, convers
- Joseph LarmorIrish theoretical physicist (1857–1942)
- Joseph MaréchalBelgian Jesuit priest and philosopher (1878–1944)
- Joseph Marie Henry Alfred Perrier de la BâthieJoseph Marie Henry Alfred Perrier de la Bâthie (11 August 1873 – 2 October 1958) was a Fre
- Joseph Noel PatonScottish artist (1821–1901)
- Joseph NyeAmerican political scientist (1937–2025)
- Joseph Pitton de TournefortFrench botanist (1656–1708)
- Joseph PolchinskiAmerican theoretical physicist and string theorist (1954–2018)
- Joseph ProustFrench chemist (1754–1826)
- Joseph the CarpenterJoseph the Carpenter is an oil painting by Georges de La Tour created circa 1642. The pain
- Joseph VialatouxFrench Catholic philosopher (1880–1970)
- Joseph VinoyFrench general (1803–1880)
- Józef HallerGeneral of the Polish Army (1873–1960)
- Józef Maria Hoene-WrońskiPolish philosopher (1776–1853)
- JRD TataFrench-born Indian industrialist, philanthropist and aviator (1904–1993)
- Juan Caramuel y LobkowitzSpanish philosopher, writer, mathematician and Catholic clergyman (1606–1682)
- Juan de MarianaSpanish historian (1536–1624)
- Juan MaldacenaArgentine physicist (born 1968)
- Judi BariAmerican environmentalist, feminist, and labor leader (1949–1997)
- Judith WrightAustralian poet and activist (1915–2000)
- Jules Dumont d'UrvilleFrench explorer and naval officer (1790–1842)
- Jules DupuitArsène Jules Étienne Juvenal Dupuit (18 May 1804 – 5 September 1866) was a French civil en
- Julia Bell (geneticist)British geneticist (1879–1979)
- Julian CesariniJulian Cesarini the Elder (It.: Giuliano Cesarini, seniore) (1398 in Rome – 10 November 14
- Julian CorbettBritish naval historian and geostrategist (1854–1922)
- Julius Edgar Lilienfeld20th-century electrical engineer and physicist (1882–1963)
- Julius EvolaItalian radical-right philosopher and esotericist (1898–1974)
- Julius LangbehnJulius Langbehn (26 March 1851 – 30 April 1907) was a German national Romantic art histori
- Julius MartovRussian Marxist theorist and revolutionary (1873–1923)
- Julius Reinhold FriedlanderJulius Reinhold Friedlander (1803–1839) was a German-American educator. He was the founder
- Julius von MayerGerman physician, chemist, knight, and physicist (1814–1878)
- Julius WessAustrian theoretical physicist (1934–2007)
- Juno (spacecraft)Second NASA orbiter mission to Jupiter (2011–Present)
- Juno IThe Juno I was a four-stage American space launch vehicle, used to launch lightweight payl
- Jusepe de RiberaSpanish painter (1591–1652)
- Jushi KingdomChinese kingdom (108 BC - 450 AD)
- JyeṣṭhadevaIndian scientist and astronomer-mathematician (1500–1575)