| Leonardo da Vinci (1452–1519), the great Italian painter, sculptor, architect, musician, mechanician, engineer and natural philosopher |
| Andrew Jackson Davis (1826–1910), American spiritualist |
| Charles Henry Davis (1807–1877), American naval officer |
| Charles Howard Davis (1857–1933), American landscape painter |
| Cushman Kellogg Davis (1838–1900), American political leader and lawyer |
| David Davis (1815–1886), American statesman and jurist |
| Henry William Banks Davis (1833–1914), English painter |
| Henry Winter Davis (1817–1865), American political leader |
| Jefferson Davis (1808–1889), American soldier and statesman |
| Jessie Bartlett Davis (1859?–1905), American operatic contralto singer |
| John Davis (1550?–1605), English navigator and explorer |
| John Davis (1787–1854), American statesman |
| John Chandler Bancroft Davis (1822–1907), American jurist and diplomat |
| John Francis Davis (1795–1890), English orientalist and army officer |
| Noah Davis (1818–1902), American jurist |
| Rebecca Harding Davis (1831–1910), American magazine writer and novelist |
| Richard Harding Davis (1864–1916), American writer |
| Thomas Osborne Davis (1814–1845), Irish poet and journalist |
| Henry Pomeroy Davison (1867–1922), American banker |
| William Davison (c. 1541–1608), secretary to Queen Elizabeth |
| Michael Davitt (1846–1906), Irish Nationalist politician |
| Louis Nicolas Davout, duc d’Auerstädt and prince d’Eckmühl (1770–1823), Marshal of France |
| Sir Humphry Davy (1778–1829), English chemist |
| Henry Laurens Dawes (1816–1903), American lawyer |
| Richard Dawes (1708–1766), English classical scholar |
| Bogumil Dawison (1818–1872), German actor |
| William Boyd Dawkins (1838–1929), English geologist and archæologist |
| Bertrand Edward, Viscount Dawson (1864–1945), English physician |
| George Dawson (1821–1876), English nonconformist divine |
| Sir John William Dawson (1820–1899), Canadian geologist |
| George Edward Day (1815–1905), American theologian and exegete |
| Henry Noble Day (1808–1890), American educationist, railroad president, and writer upon philosophical subjects |
| Horace Hollister Day (1813–1878), American manufacturer and capitalist |
| Jeremiah Day (1773–1867), American educationist |
| John Day (1574–1640?), English dramatist |
| Thomas Day (1748–1789), British author |
| William Lewis Dayton (1807–1864), American statesman |
| Daza Hilarión (1840–1894), Bolivian politician and revolutionist |
| Ferencz Deák (1803–1876), Hungarian statesman |
| Alfred Deakin (1856–1910), Australian statesman |
| Edmondo De Amicis (1846–1908), Italian writer |
| Charles Deane (1813–1889), American historical writer |
| Richard Deane (1610–1653), British general-at-sea, major-general and regicide |
| Silas Deane (1737–1789), American diplomat |
| Henry Dearborn (1751–1829), American physician and soldier |
| Deborah, Israelite heroine in the Bible |
| William de Braose (1144 or 1153–1211), Lord of Brecknock, Radnor and Limerick |
| Eugene Victor Debs (1855–1926), American labour leader and socialist |
| Claude Debussy (1862–1918), French composer |
| Charles Mathieu Isidore Decaen (1769–1832), French soldier |
| Joseph DeCamp (1858–1923), American portrait and figure painter |
| Alexandre-Gabriel Decamps (1803–1860), French painter |
| Stephen Decatur (1779–1820), American naval commander |
| Élie, Duc Decazes (1780–1860), French statesman |
| Heinrich von Dechen (1800–1889), German geologist |
| Decius (201–251), Roman Emperor |
| Jeremias de Decker (1609–1666), Dutch poet |
| Sir Matthew Decker (1679–1749), English merchant and writer on trade |
| Pierre de Decker (1812–1891), Belgian statesman and author |
| Benjamin Franklin DeCosta (1831–1904), American clergyman and historical writer |
| John de Courcy (d. 1219?), Anglo-Norman conqueror of Ulster |
| Marco Antonio de Dominis (1560–1624), Italian theologian and natural philosopher |
| John Dee (1527–1608), English mathematician and astrologer |
| Charles Force Deems (1820–1893), American clergyman |
| Filippo de Filippi (1869–1938), Italian scientist and explorer |
| Daniel Defoe (1661?–1731), English author |
| John William De Forest (1826–1906), American soldier and author |
| Edgar Degas (1834–1917), French painter |
| Louis Gerhard De Geer (1818–1896), Swedish statesman and writer |
| Santos Degollado (1811–1861), Mexican general |
| John de Gray (d. 1214), Bishop of Norwich |
| Walter de Gray (d. 1255), English prelate and statesman |
| Angelo de Gubernatis (1840–1913), Italian man of letters |
| Mauritz Frederick Hendrick de Haas (1832–1895), American marine painter |
| Deioces (d. 647 B.C.), first King of the Medes |
| Deïotarus (First Century B.C.), Tetrarch of Galatia |
| Virginie Déjazet (1798–1875), French actress |
| Johann de Kalb (1721–1780), German soldier in the American War of Independence |
| Charles de Kay (1848–1935), American novelist and journalist |
| Eduard Douwes Dekker (Multatuli) (1820–1887), Dutch writer |
| Thomas Dekker (c. 1570–1632), English dramatist |
| Helen Aldrich De Kroyft (1818–1915), American authoress |
| Henry Thomas De la Beche (1796–1855), English geologist |
| Henri-François Delaborde (1764–1833), French soldier |
| Eugène Delacroix (1798–1863), French historical painter |
| Magnus de la Gardie (1622–1686), Swedish statesman |
| Jean Baptiste Joseph Delambre (1749–1822), French astronomer |
| George Booth, Baron Delamer (1622–1684), English noble |
| James De Lancey (1703–1760), American jurist |
| Margaret Deland (1857–1945), American writer |
| John Thaddeus Delane (1817–1879), editor of The Times (London) |
| Mary Delany (1700–1788), Englishwoman of literary tastes |
| Jacobus Hercules De La Rey (1848–1914), Boer soldier |
| Hippolyte Delaroche (1797–1856), French painter |
| Warren De la Rue (1815–1889), British astronomer and chemist |
| Jules-Élie Delaunay (1828–1891), French painter |
| Louis-Arsène Delaunay (1826–1903), French actor |
| Casimir Delavigne (1793–1843), French poet and dramatist |
| De La Warr, English barony |
| Hans Delbrück (1848–1929), German historian |
| Martin Friedrich Rudolph von Delbrück (1817–1903), Prussian statesman |
| Théophile Delcassé (1852–1923), French statesman |
| Louis Charles Delescluze (1809–1871), French journalist |
| Achille Ernest Oscar Joseph Delesse (1817–1881), French geologist and mineralogist |
| Benjamin, Baron Delessert (1773–1847), French banker |
| Melchiorre Delfico (1744–1835), Italian economist |
| Léo Delibes (1836–1891), French composer |
| Theodoros Deligiannes (1826–1905), Greek statesman |
| Delilah, biblical heroine |
| Jacques Delille (1738–1813), French poet |
| Léopold Delisle (1826–1910), French bibliophile and historian |
| Franz Delitzsch (1813–1890), German Lutheran theologian and orientalist |
| Frederick Delius (1862–1934), English musical composer |
| Nikolaus Delius (1813–1888), German philologist and Shakespearean scholar |
| Stefano della Bella (1610–1664), Italian engraver |
| Giovanni Della Casa (1503–1556), Italian poet |
| Pietro della Valle (1586–1652), Italian traveller in the East |
| Delmedigo, Cretan Jewish family |
| Jean-Louis Delolme (1740–1806), Swiss jurist and constitutional writer |
| Thomas Deloney (c. 1543–1600), English ballad-writer and pamphleteer |
| George Washington De Long (1844–1881), American explorer |
| Marion Delorme (1612–1650), French courtesan |
| Albert Delpit (1849–1893), French author |
| Jean André Deluc (1727–1817), Swiss geologist and meteorologist |
| Demades (c. 380–318 B.C.), Athenian orator and demagogue |
| Demaratus (Fifth Century B.C.), King of Sparta |
| Demetrius (Third–Second Century B.C.), King of Bactria |
| Demetrius, name of two kings of Macedonia |
| Demetrius, name of three kings of Syria |
| Demetrius (Early Fourth Century B.C.), Greek sculptor |
| Demetrius (First Century A.D.), Cynic philosopher |
| Demetrius Donskoi (1350–1389), Grand-duke of Vladimir and Moscow |
| Demetrius Phalereus (c. 345–283 B.C.), Attic orator, statesman and philosopher |
| Pseudo-Demetrius, name of three Muscovite princes and pretenders |
| Demidov, name of a famous Russian family |
| James De Mille (1833–1880), Canadian writer and educator |
| Democedes (fl. Sixth Century B.C.), Greek physician |
| Demochares (c. 360–275 B.C.), nephew of Demosthenes |
| Democritus (c. 460–c. 370 B.C.), probably the greatest of the Greek physical philosophers |
| Jacques Claude Demogeot (1808–1894), French man of letters |
| Augustus De Morgan (1806–1871), English mathematician and logician |
| William De Morgan (1839–1917), English novelist |
| Demosthenes (384–322 B.C.), the great Attic orator and statesman |
| Thomas Dempster (1579?–1625), Scottish scholar and historian |
| William Feilding, Earl of Denbigh (c. 1582–1643), English admiral |
| Edwin Denby (1870–1929), American public official |
| Dixon Denham (1786–1828), English traveller in West Central Africa |
| Sir John Denham (1615–1669), English poet |
| Joseph Deniker (1852–1918), French naturalist and anthropologist |
| Anton Ivanovich Denikin (1872–1947), Russian general |
| Carlo Denina (1731–1813), Italian historian |
| Saint Denis, first Bishop of Paris, patron saint of France |
| Ferdinand Denis (1798–1890), French traveler and writer |
| Johann Denis (1729–1800), Austrian poet |
| Maurice Denis (1870–1943), French painter |
| George Anthony Denison (1805–1896), English churchman |
| George Taylor Denison (1839–1925), Canadian soldier and publicist |
| Joseph Dennie (1768–1812), American journalist |
| John Dennis (1657–1734), English critic and dramatist |
| Thomas, Baron Denman (1779–1854), English judge |
| Vivant Denon (1747–1825), French artist and archæologist |
| Pierre Dens (1690–1775), Belgian Roman Catholic theologian |
| Manius Curius Dentatus (d. 270 B.C.), Roman general |
| James William Denver (1817–1892), American lawyer, soldier and politician |
| Washington Charles DePauw (1822–1887), American manufacturer and philanthropist |
| Chauncey Mitchell Depew (1834–1928), American lawyer and politician |
| Abraham De Peyster (1657–1728), American colonial jurist |
| Johannes De Peyster (1600–c. 1685), American colonial merchant |
| John Watts De Peyster (1821–1907), American public man and author |
| Agostino Depretis (1813–1887), Italian statesman |
| Thomas De Quincey (1785–1859), English author |
| Georges-Bernard Depping (1784–1853), French historical writer |
| Earls of Derby |
| Elias Hasket Derby (1739–1799), American merchant |
| George Horatio Derby (1823–1861), American army officer and humorist |
| Hartwig Derenbourg (1844–1908), French Arabist |
| Joseph Derenbourg (1811–1895), French Hebrew scholar |
| William Derham (1657–1735), English divine |
| Dermot MacMurrough (1110?–1171), Irish King of Leinster |
| Paul Déroulède (1846–1914), French author and politician |
| Earl of Derwentwater |
| François de Beaumont, Baron des Adrets (c. 1512–1587), French Protestant leader |
| Louis Charles Antoine Desaix de Veygoux (1768–1800), French general |
| Francesco De Sanctis (1817–1883), Italian publicist |
| Marc-Antoine Désaugiers (1772–1827), French dramatist and song-writer |
| Pierre-Joseph Desault (1738–1795), French anatomist and surgeon |
| James, Baron De Saumarez (1757–1836), English admiral |
| Jacques Vallée Des Barreaux (1599–1673), French poet |
| John Desborough (1608–1680), English soldier and politician |
| René Descartes (1596–1650), French philosopher |
| Émile Deschamps (1791–1871), French poet and man of letters |
| Eustache Deschamps (1346?–1406), French poet |
| Émile Deschanel (1819–1904), French educator and writer, member of the Senate |
| Paul Eugène Louis Deschanel (1856–1922), French statesman |
| Alfred Des Cloizeaux (1817–1897), French mineralogist |
| Desclot (fl. Thirteenth Century), Spanish prose writer |
| Emmanuel Adolphe des Essarts (1839–1909), French poet and man of letters |
| René Louiche Desfontaines (1750–1833), French botanist |
| Desforges (1746–1806), French dramatist and man of letters |
| Nicolas des Gallars (c. 1520–c. 1580), Calvinistic divine |
| Magdeleine Marie Desgarcins (1769–1797), French actress |
| René Desgenettes (1762–1837), French military surgeon |
| Gérard Paul Deshayes (1795–1875), French geologist and conchologist |
| Madame Deshoulières (c. 1634–1694), French poet |
| Desiderio da Settignano (1428–1464), Italian sculptor |
| Desiderius (Eighth Century), last King of the Lombards |
| Pierre Desmaizeaux (1673?–1745), French writer |
| Nicolas Desmarest (1725–1815), French geologist |
| Jean Desmarets de Saint-Sorlin (1595–1676), French dramatist and miscellaneous writer |
| Nicolas Desmarets (1648–1721), French statesman |
| Gerald Fitzgerald, 15th Earl of Desmond (d. 1583), Irish leader |
| Camille Desmoulins (1760–1794), French journalist and politician |
| Jules Pierre François Stanislas Desnoyers (1800–1887), French geologist and archæologist |
| Édouard Desor (1811–1882), Swiss geologist |
| Edward Marcus Despard (1751–1803), Irish conspirator |
| Hugh le Despenser (d. 1265), Chief Justiciar of England |
| Hugh le Despenser (1262–1326), English courtier |
| Bonaventure Des Périers (c. 1500–c. 1544), French author |
| Philippe Desportes (1546–1606), French poet |
| Suzanne Desprès (1875–1951), French actress |
| Peter des Roches (d. 1238), Bishop of Winchester |
| Antoine-François Desrues (1744–1777), French poisoner |
| Joseph-Marie Dessaix (1764–1834), French general |
| Jean-Jacques Dessalines (1758–1806), Haitian Emperor |
| Aurél Dessewffy (1808–1842), Hungarian journalist and politician |
| Ludwig Dessoir (1810–1874), German actor |
| Madame de Staël (1766–1817), French novelist and miscellaneous writer |
| Philippe Néricault Destouches (1680–1754), French dramatist |
| Antoine Louis Claude, Comte Destutt de Tracy (1754–1836), French philosopher |
| Lord de Tabley (John Byrne Leicester Warren) (1835–1895), English poet |
| Édouard Detaille (1848–1912), French painter |
| Léonce Détroyat (1829–1898), French naval officer and journalist |
| João de Deus (1830–1896), greatest Portuguese poet of his generation |
| Immanuel Oscar Menahem Deutsch (1829–1873), German oriental scholar |
| Devadatta, son of Suklodana, who was younger brother to the father of the Buddha |
| Éamon de Valera (1882–1975), Irish republican leader |
| Charles Devens (1820–1891), American lawyer and jurist |
| Sir Aubrey de Vere (1788–1846), Irish poet |
| Aubrey Thomas de Vere (1814–1902), Irish poet and critic |
| John Henry, Baron de Villiers (1842–1914), first Chief Justice of the Union of South Africa |
| Theodore Low De Vinne (1828–1914), American printer |
| Earls of Devon |
| Hudson Ewbanke Kearley, Viscount Devonport (1856–1934), English politician and man of business |
| Earls and Dukes of Devonshire |
| Devrient, name of a family of German actors |
| James Dewar (1842–1923), British chemist and physicist |
| Sir Simonds D’Ewes (1602–1650), English antiquarian |
| Christiaan De Wet (1854–1922), Boer general and politician |
| Wilhelm Martin Leberecht De Wette (1780–1849), German theologian |
| Davis Rich Dewey (1858–1942), American economist and statistician |
| George Dewey (1837–1917), American naval officer |
| Melvil Dewey (1851–1931), American librarian |
| Orville Dewey (1794–1882), American Unitarian minister |
| Thomas Wilmer Dewing (1851–1938), American figure painter |
| Peter De Wint (1784–1849), English landscape painter |
| Publius Herennius Dexippus (c. 210–273 A.D.), Greek historian, statesman and general |
| Henry Martyn Dexter (1821–1890), American clergyman and author |
| Samuel Dexter (1761–1816), American jurist |
| Timothy Dexter (1747–1806), American merchant, remarkable for his eccentricities |
| Francis, Baron Dhanis (1862–1909), Belgian administrator |
| Diagoras of Melos (Fifth Century B.C.), poet and sophist |
| Fra Diamante (c. 1430–c. 1490), Italian fresco painter |
| Juan Bautista Diamante (1625?–1687?), Spanish dramatist |
| Diane de France (1538–1619), Duchess of Montmorency and Angoulême |
| Antônio Gonçalves Dias (1823–1864), Brazilian lyric poet |
| Bartholomeu Dias (fl. 1481–1500), Portuguese explorer, discoverer of the Cape of Good Hope |
| Fra Diavolo (1771–1806), popular name given to a famous Italian brigand |
| Armando Diaz (1861–1928), Italian general |
| Porfirio Díaz (1830–1915), President of the republic of Mexico |
| Narcisse Virgile Diaz de la Peña (1807–1876), French painter |
| Bernal Díaz del Castillo (1496–1584), Spanish soldier, and historian of the conquest of Mexico |
| Juan Díaz de Solís (1470?–1516), Spanish navigator |
| Charles Dibdin (1745–1814), British musician, dramatist, novelist, actor and song-writer |
| Thomas Frognall Dibdin (1776–1847), English bibliographer |
| Thomas Dibdin (1771–1841), English dramatist and song-writer |
| Dicaearchus of Messene (fl. c. 320 B.C.), Peripatetic philosopher and pupil of Aristotle, historian, and geographer |
| Ralph de Diceto (d. c. 1202), Dean of St. Paul’s, London, and chronicler |
| Edward Dicey (1832–1911), English writer |
| Robert Dick (1811–1866), Scottish geologist and botanist |
| Thomas Dick (1774–1857), Scottish writer on astronomy |
| Charles Dickens (1812–1870), English novelist |
| Anna Elizabeth Dickinson (1842–1932), American author and lecturer |
| John Dickinson (1732–1808), American statesman and pamphleteer |
| Jonathan Dickinson (1688–1747), American Presbyterian clergyman |
| Sir Alexander Dickson (1777–1840), British artillerist |
| Sir James Robert Dickson (1832–1901), Australian statesman |
| Angelo di Costanzo (c. 1507–1591), Italian historian and poet |
| Dictys Cretensis, Supposed companion of Idomeneus during the Trojan War |
| Dicuil (fl. 825), Irish monastic scholar, grammarian and geographer |
| Denis Diderot (1713–1784), French man of letters and encyclopædist |
| Didius Julianus (137–193 A.D.), Roman Emperor |
| Dido, reputed founder of Carthage, in Africa |
| Henri Didon (1840–1900), French Dominican |
| Didot, name of a family of learned French printers and publishers |
| Adolphe Napoléon Didron (1806–1867), French archæologist |
| Didymus the Blind (c. 313–c. 398), ecclesiastical writer of Alexandria |
| Didymus Chalcenterus (c. 63 B.C.–10? A.D.), Greek scholar and grammarian |
| Hans Karl von Diebitsch (1785–1831), Russian field-marshal |
| Lorenz Diefenbach (1806–1883), German philologist and ethnologist |
| Frederick Dielmann (1847–1935), American portrait and figure painter |
| Anthony van Diemen (1593–1645), Dutch admiral and governor-general of the East Indian settlements |
| Abraham van Diepenbeeck (1596–1675), Flemish painter |
| Léon Dierx (1838–1912), French poet |
| Albert Christoph Dies (1755–1822), German painter |
| Jean-Armand, Baron Dieskau (1701–1767), soldier of Saxony |
| Friedrich Adolf Wilhelm Diesterweg (1790–1866), German educationist |
| Christian Wilhelm Ernst Dietrich (1712–1774), German painter |
| Lorentz Henrik Segelcke Dietrichson (1834–1917), Norwegian poet and critic |
| Dietrich von Nieheim (c. 1340–1418), medieval historian |
| Marcel Dieulafoy (1844–1920), French archæologist |
| Friedrich Diez (1794–1876), German philologist |
| Sir Everard Digby (1578–1606), English conspirator |
| Jane Elizabeth Digby (1807–1881), noted heroine of the modern Chronique Scandaleuse |
| Sir Kenelm Digby (1603–1665), English author, diplomatist and naval commander |
| Kenelm Henry Digby (1800–1880), English writer |
| Digenis Akritas, Byzantine national hero |
| Digges, English family of scholars and authors |
| West Digges (1720?–1786), English actor |
| Sir Charles Wentworth Dilke (1810–1869), English politician |
| Johann Jakob Dillenius (1687?–1747), English botanist |
| Julien Dillens (1849–1904), Belgian sculptor |
| August Dillmann (1823–1894), German orientalist and biblical scholar |
| Arthur-Richard Dillon (1721–1806), French Archbishop |
| John Dillon (1851–1927), Irish Nationalist politician |
| John Blake Dillon (1814–1866), Irish politician |
| Thomas Dimsdale (1712–1800), English physician |
| Dinarchus (c. 361–291 B.C.), last of the “ten” Attic orators |
| Wilhelm Dindorf (1802–1883), German classical scholar |
| Franz von Dingelstedt (1814–1881), German poet and dramatist |
| Dinocrates (Fourth Century B.C.), a great and original Greek architect |
| Robert Dinsmoor (1757–1836), American poet |
| Robert Dinwiddie (1693–1770), English colonial governor of Virginia |
| Dio Cassius (c. 155–235), Roman historian |
| Dio Chrysostom (c. 40–115 A.D.), Greek sophist and rhetorician |
| Diocletian (245–313), Roman Emperor |
| Giovanni Diodati (1576–1649), Swiss Protestant divine |
| Diodorus Cronus (Fourth Century B.C.), Greek philosopher of the Megarian school |
| Diodorus Siculus (First Century B.C.), Greek historian |
| Diodotus (Third Century), Seleucid satrap of Bactria |
| Diogenes (d. c. 323 B.C.), “The Cynic,” Greek philosopher |
| Diogenes Apolloniates (c. 460 B.C.), Greek natural philosopher |
| Diogenes Laertius (Third Century A.D.), biographer of the Greek philosophers |
| Diogenianus (First–Second Century), Greek grammarian |
| Diomedes (Fourth Century), Latin grammarian |
| Dion (408–353 B.C.), tyrant of Syracuse |
| Dionysius (d. 268), Pope |
| Dionysius (c. 432–367 B.C.), tyrant of Syracuse |
| Dionysius Exiguus (d. c. 540), learned man and chronologist |
| Dionysius Periegetes, author of a description of the habitable world in Greek hexameter verse |
| Dionysius Thrax (fl. c. 100 B.C.), author of the first Greek grammar |
| Dionysius of Halicarnassus (fl. First Century B.C.), Greek historian and teacher of rhetoric |
| Dionysius of Tel-Maḥrē (d. 845?), Patriarch of the Syrian Jacobite Church |
| Saint Dionysius the Areopagite (fl. First Century A.D.), Athenian early Christian |
| Diophantus of Alexandria, Greek algebraist |
| Diphilus of Sinope (Fourth Century B.C.), poet of the new Attic comedy |
| Dipoenus and Scyllis, early Greek sculptors |
| Johann Konrad Dippel (1673–1734), German theologian and alchemist
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