| 70381 | June 20 | Birth | 1566 – Sigismund III Vasa, Polish king (d. 1632) |
| 70382 | June 20 | Birth | 1583 – Jacob De la Gardie, Swedish soldier and politician, Lord High Constable of Sweden (d. 1652) |
| 70383 | June 20 | Birth | 1634 – Charles Emmanuel II, Duke of Savoy (d. 1675) |
| 70384 | June 20 | Birth | 1642 – George Hickes, English minister and scholar (d. 1715) |
| 70385 | June 20 | Birth | 1647 – John George III, Elector of Saxony (d. 1691) |
| 70386 | June 20 | Birth | 1699 – William Gustav of Anhalt-Dessau (d. 1737) |
| 70387 | June 20 | Birth | 1717 – Jacques Saly, French sculptor and painter (d. 1776) |
| 70388 | June 20 | Birth | 1723 – Adam Ferguson, Scottish philosopher and historian (d. 1816) |
| 70389 | June 20 | Birth | 1723 – Theophilus Lindsey, English minister and theologian (d. 1808) |
| 70390 | June 20 | Birth | 1733 – Betty Washington Lewis, American sister of George Washington (d. 1797) |
| 70391 | June 20 | Birth | 1737 – Tokugawa Ieharu, Japanese shogun (d. 1786) |
| 70392 | June 20 | Birth | 1754 – Princess Amalie of Hesse-Darmstadt (d. 1832) |
| 70393 | June 20 | Birth | 1756 – Joseph Martin Kraus, German-Swedish composer and educator (d. 1792) |
| 70394 | June 20 | Birth | 1761 – Jacob Hübner, German entomologist and author (d. 1826) |
| 70395 | June 20 | Birth | 1763 – Wolfe Tone, Irish general (d. 1798) |
| 70396 | June 20 | Birth | 1770 – Moses Waddel, American minister and academic (d. 1840) |
| 70397 | June 20 | Birth | 1771 – Thomas Douglas, 5th Earl of Selkirk, Scottish philanthropist and politician, Lord Lieutenant of Kirkcudbright (d. 1820) |
| 70398 | June 20 | Birth | 1771 – Hermann von Boyen, Prussian general and politician, Prussian Minister of War (d. 1848) |
| 70399 | June 20 | Birth | 1777 – Jean-Jacques Lartigue, Canadian bishop (d. 1840) |
| 70400 | June 20 | Birth | 1778 – Jean Baptiste Gay, vicomte de Martignac, French politician, 7th Prime Minister of France (d. 1832) |
| 70401 | June 20 | Birth | 1786 – Marceline Desbordes-Valmore, French poet and author (d. 1859) |
| 70402 | June 20 | Birth | 1796 – Luigi Amat di San Filippo e Sorso, Italian cardinal (d. 1878) |
| 70403 | June 20 | Birth | 1808 – Samson Raphael Hirsch, German rabbi and scholar (d. 1888) |
| 70404 | June 20 | Birth | 1809 – Isaak August Dorner, German theologian and academic (d. 1884) |
| 70405 | June 20 | Birth | 1813 – Joseph Autran, French poet and author (d. 1877) |
| 70406 | June 20 | Birth | 1819 – Jacques Offenbach, German-French cellist and composer (d. 1880) |
| 70407 | June 20 | Birth | 1855 – Richard Lodge, English historian and academic (d. 1936) |
| 70408 | June 20 | Birth | 1858 – Charles W. Chesnutt, American lawyer and author (d. 1932) |
| 70409 | June 20 | Birth | 1860 – Alexander Winton, Scottish-American race car driver and engineer (d. 1932) |
| 70410 | June 20 | Birth | 1860 – Jack Worrall, Australian cricketer, footballer, and coach (d. 1937) |