| 20821 | February 23 | Birth | 1992 – Casemiro, Brazilian footballer |
| 20822 | February 23 | Birth | 1992 – Kyriakos Papadopoulos, Greek footballer |
| 20823 | February 23 | Birth | 1992 – Samara Weaving, Australian actress and model |
| 20824 | February 23 | Birth | 1993 – Kasumi Ishikawa, Japanese table tennis player |
| 20825 | February 23 | Birth | 1994 – Dakota Fanning, American actress |
| 20826 | February 23 | Birth | 1995 – Andrew Wiggins, Canadian basketball player |
| 20827 | February 23 | Birth | 2005 – Jillian Ward, Filipino actress and model |
| 20828 | February 23 | Birth | 2012 – Princess Estelle, Duchess of Östergötland |
| 20829 | February 23 | Death | 572 – Chihor-Vishnasp, Armenian general and politician |
| 20830 | February 23 | Death | 715 – Al-Walid I, Arab caliph (b. 668) |
| 20831 | February 23 | Death | 943 – Herbert II, Count of Vermandois, (b. 884) |
| 20832 | February 23 | Death | 1011 – Willigis, German archbishop (b. 940) |
| 20833 | February 23 | Death | 1100 – Emperor Zhezong of Song (b. 1076) |
| 20834 | February 23 | Death | 1270 – Isabel of France (b. 1225) |
| 20835 | February 23 | Death | 1447 – Humphrey, Duke of Gloucester (b. 1390) |
| 20836 | February 23 | Death | 1447 – Pope Eugene IV (b. 1383) |
| 20837 | February 23 | Death | 1464 – Zhengtong Emperor of China (b. 1427) |
| 20838 | February 23 | Death | 1554 – Henry Grey, 1st Duke of Suffolk, English politician, Lord Lieutenant of Leicestershire (b. 1515) |
| 20839 | February 23 | Death | 1572 – Pierre Certon, French composer (b. 1510) |
| 20840 | February 23 | Death | 1603 – Andrea Cesalpino, Italian philosopher, physician, and botanist (b. 1519) |
| 20841 | February 23 | Death | 1669 – Lieuwe van Aitzema, Dutch historian and diplomat (b. 1600) |
| 20842 | February 23 | Death | 1704 – Georg Muffat, French organist and composer (b. 1653) |
| 20843 | February 23 | Death | 1766 – Stanisław Leszczyński, Polish king (b. 1677) |
| 20844 | February 23 | Death | 1781 – George Taylor, Irish-American blacksmith and politician (b. 1716) |
| 20845 | February 23 | Death | 1792 – Joshua Reynolds, English painter (b. 1723) |
| 20846 | February 23 | Death | 1800 – Joseph Warton, English academic and critic (b. 1722) |
| 20847 | February 23 | Death | 1821 – John Keats, English poet (b. 1795) |
| 20848 | February 23 | Death | 1848 – John Quincy Adams, American politician, 6th President of the United States (b. 1767) |
| 20849 | February 23 | Death | 1855 – Carl Friedrich Gauss, German mathematician, astronomer, and physicist (b. 1777) |
| 20850 | February 23 | Death | 1859 – Zygmunt Krasiński, Polish poet and playwright (b. 1812) |