| 138571 | December 8 | Birth | 65 BC– Horace, Roman soldier and poet (d. 8 BC) |
| 138572 | December 8 | Birth | 1412 – Astorre II Manfredi, Italian lord (d. 1468) |
| 138573 | December 8 | Birth | 1542 – Mary, Queen of Scots (d. 1587) |
| 138574 | December 8 | Birth | 1574 – Maria Anna of Bavaria (d. 1616) |
| 138575 | December 8 | Birth | 1678 – Horatio Walpole, 1st Baron Walpole, English politician and diplomat, British Ambassador to France (d. 1757) |
| 138576 | December 8 | Birth | 1699 – Maria Josepha of Austria (d. 1757) |
| 138577 | December 8 | Birth | 1708 – Francis I, Holy Roman Emperor (d. 1765) |
| 138578 | December 8 | Birth | 1724 – Claude Balbastre, French organist and composer (d. 1799) |
| 138579 | December 8 | Birth | 1730 – Jan Ingenhousz, Dutch physician, physiologist, and botanist (d. 1799) |
| 138580 | December 8 | Birth | 1731 – František Xaver Dušek, Czech pianist and composer (d. 1799) |
| 138581 | December 8 | Birth | 1756 – Archduke Maximilian Francis of Austria (d. 1801) |
| 138582 | December 8 | Birth | 1765 – Eli Whitney, American engineer, invented the cotton gin (d. 1825) |
| 138583 | December 8 | Birth | 1795 – Peter Andreas Hansen, Danish astronomer and mathematician (d. 1874) |
| 138584 | December 8 | Birth | 1815 – Adolph Menzel, German painter and illustrator (d. 1905) |
| 138585 | December 8 | Birth | 1816 – August Belmont, Prussian-American financier and diplomat, 16th United States Ambassador to the Netherlands (d. 1890) |
| 138586 | December 8 | Birth | 1817 – Christian Emil Krag-Juel-Vind-Frijs, Danish politician, 10th Prime Minister of Denmark (d. 1896) |
| 138587 | December 8 | Birth | 1818 – Charles III, Prince of Monaco (d. 1889) |
| 138588 | December 8 | Birth | 1822 – Jakov Ignjatović, Hungarian-Serbian author (d. 1889) |
| 138589 | December 8 | Birth | 1832 – Bjørnstjerne Bjørnson, Norwegian-French author and playwright, Nobel Prize laureate (d. 1910) |
| 138590 | December 8 | Birth | 1860 – Amanda McKittrick Ros, Irish author and poet (d. 1939) |
| 138591 | December 8 | Birth | 1861 – William C. Durant, American businessman, founded General Motors and Chevrolet (d. 1947) |
| 138592 | December 8 | Birth | 1861 – Aristide Maillol, French sculptor and painter (d. 1944) |
| 138593 | December 8 | Birth | 1861 – Georges Méliès, French actor, director, producer, and screenwriter (d. 1938) |
| 138594 | December 8 | Birth | 1862 – Georges Feydeau, French playwright (d. 1921) |
| 138595 | December 8 | Birth | 1864 – Camille Claudel, French illustrator and sculptor (d. 1943) |
| 138596 | December 8 | Birth | 1865 – Rüdiger von der Goltz, German general (d. 1946) |
| 138597 | December 8 | Birth | 1865 – Jacques Hadamard, French mathematician and academic (d. 1963) |
| 138598 | December 8 | Birth | 1865 – Jean Sibelius, Finnish pianist and composer (d. 1957) |
| 138599 | December 8 | Birth | 1874 – Ernst Moro, Austrian physician and pediatrician (d. 1951) |
| 138600 | December 8 | Birth | 1875 – Frederik Buch, Danish actor and screenwriter (d. 1925) |