| 122371 | October 26 | Event | 2003 – The Cedar Fire, the second-largest fire in California history, kills 15 people, consumes 250,000 acres (1,000 km2), and destroys 2,200 homes around San Diego. |
| 122372 | October 26 | Event | 2014 – Britain withdraws from Afghanistan after the end of Operation Herrick which started on June 20, 2002 after 12 years four months and seven days. |
| 122373 | October 26 | Birth | 1416 – Edmund Grey, 1st Earl of Kent, English politician, Lord High Treasurer (d. 1490) |
| 122374 | October 26 | Birth | 1427 – Sigismund, Archduke of Austria (d. 1496) |
| 122375 | October 26 | Birth | 1474 – Friedrich of Saxony (d. 1510) |
| 122376 | October 26 | Birth | 1491 – Zhengde Emperor of China (d. 1521) |
| 122377 | October 26 | Birth | 1529 – Anna of Hesse (d. 1591) |
| 122378 | October 26 | Birth | 1564 – Hans Leo Hassler German organist and composer (d. 1612) |
| 122379 | October 26 | Birth | 1609 – William Sprague, English-American settler, co-founded Charlestown, Massachusetts (d. 1675) |
| 122380 | October 26 | Birth | 1673 – Dimitrie Cantemir, Moldavian geographer, historian, and philosopher (d. 1723) |
| 122381 | October 26 | Birth | 1684 – Kurt Christoph Graf von Schwerin, Prussian field marshal (d. 1757) |
| 122382 | October 26 | Birth | 1685 – Domenico Scarlatti, Italian harpsichord player and composer (d. 1757) |
| 122383 | October 26 | Birth | 1694 – Johan Helmich Roman, Swedish composer and academic (d. 1758) |
| 122384 | October 26 | Birth | 1747 – Ivan Mane Jarnović, Italian violinist and composer (d. 1804) |
| 122385 | October 26 | Birth | 1757 – Karl Leonhard Reinhold, Austrian philosopher and academic (d. 1823) |
| 122386 | October 26 | Birth | 1759 – Georges Danton, French lawyer and politician, French Minister of Justice (d. 1794) |
| 122387 | October 26 | Birth | 1768 – Eustachy Erazm Sanguszko, Polish general and politician (d. 1844) |
| 122388 | October 26 | Birth | 1794 – Konstantin Thon, Russian architect, designed the Grand Kremlin Palace and the Cathedral of Christ the Saviour (d. 1881) |
| 122389 | October 26 | Birth | 1795 – Nikolaos Mantzaros, Greek composer and theorist (d. 1872) |
| 122390 | October 26 | Birth | 1797 – Giuditta Pasta, Italian soprano (d. 1865) |
| 122391 | October 26 | Birth | 1799 – Margaret Agnes Bunn, Scottish actress (d. 1883) |
| 122392 | October 26 | Birth | 1800 – Helmuth von Moltke the Elder, Prussian field marshal (d. 1891) |
| 122393 | October 26 | Birth | 1802 – Miguel I of Portugal (d. 1866) |
| 122394 | October 26 | Birth | 1803 – Joseph Hansom, English architect and publisher, designed Birmingham Town Hall (d. 1882) |
| 122395 | October 26 | Birth | 1842 – Vasily Vereshchagin, Russian soldier and painter (d. 1904) |
| 122396 | October 26 | Birth | 1849 – Ferdinand Georg Frobenius, German mathematician and academic (d. 1917) |
| 122397 | October 26 | Birth | 1850 – Grigore Tocilescu, Romanian archaeologist and historian (d. 1909) |
| 122398 | October 26 | Birth | 1854 – C. W. Post, American businessman, founded Post Foods (d. 1914) |
| 122399 | October 26 | Birth | 1860 – Frank Eaton, American marshal and author (d. 1958) |
| 122400 | October 26 | Birth | 1865 – Benjamin Guggenheim, American businessman (d. 1912) |