| 9871 | January 23 | Death | 1516 – Ferdinand II of Aragon (b. 1452) |
| 9872 | January 23 | Death | 1548 – Bernardo Pisano, Italian priest, scholar, and composer (b. 1490) |
| 9873 | January 23 | Death | 1549 – Johannes Honter, Romanian-Hungarian cartographer and theologian (b. 1498) |
| 9874 | January 23 | Death | 1567 – Jiajing Emperor of China (b. 1507) |
| 9875 | January 23 | Death | 1570 – James Stewart, 1st Earl of Moray, Scottish politician (b. 1531) |
| 9876 | January 23 | Death | 1622 – William Baffin, English explorer and navigator |
| 9877 | January 23 | Death | 1678 – Sir William Curtius FRS, German magistrate, English baronet official resident of the English Crown in the Holy Roman Empire, b. (1599). |
| 9878 | January 23 | Death | 1744 – Giambattista Vico, Italian philosopher and historian (b. 1668) |
| 9879 | January 23 | Death | 1785 – Matthew Stewart, Scottish mathematician and academic (b. 1717) |
| 9880 | January 23 | Death | 1789 – Frances Brooke, English author and playwright (b. 1724) |
| 9881 | January 23 | Death | 1789 – John Cleland, English author (b. 1709) |
| 9882 | January 23 | Death | 1800 – Edward Rutledge, American captain and politician, 39th Governor of South Carolina (b. 1749) |
| 9883 | January 23 | Death | 1803 – Arthur Guinness, Irish brewer, founded Guinness (b. 1725) |
| 9884 | January 23 | Death | 1805 – Claude Chappe, French engineer (b. 1763) |
| 9885 | January 23 | Death | 1806 – William Pitt the Younger, English politician, Prime Minister of the United Kingdom (b. 1759) |
| 9886 | January 23 | Death | 1810 – Johann Wilhelm Ritter, German chemist and physicist (b. 1776) |
| 9887 | January 23 | Death | 1812 – Robert Craufurd, Scottish general and politician (b. 1764) |
| 9888 | January 23 | Death | 1820 – Prince Edward, Duke of Kent and Strathearn (b. 1767) |
| 9889 | January 23 | Death | 1833 – Edward Pellew, 1st Viscount Exmouth, English admiral and politician (b. 1757) |
| 9890 | January 23 | Death | 1837 – John Field, Irish pianist and composer (b. 1782) |
| 9891 | January 23 | Death | 1866 – Thomas Love Peacock, English author and poet (b. 1785) |
| 9892 | January 23 | Death | 1875 – Charles Kingsley English priest and author (b. 1819) |
| 9893 | January 23 | Death | 1883 – Gustave Doré, French engraver and illustrator (b. 1832) |
| 9894 | January 23 | Death | 1893 – José Zorrilla, Spanish poet and playwright (b. 1817) |
| 9895 | January 23 | Death | 1893 – Lucius Quintus Cincinnatus Lamar II, American lawyer and politician 16th United States Secretary of the Interior (b. 1825) |
| 9896 | January 23 | Death | 1921 – Mykola Leontovych, Ukrainian composer and conductor (b. 1877) |
| 9897 | January 23 | Death | 1922 – Arthur Nikisch, Hungarian conductor and academic (b. 1855) |
| 9898 | January 23 | Death | 1923 – Max Nordau, Austrian physician and author (b. 1849) |
| 9899 | January 23 | Death | 1931 – Anna Pavlova, Russian-English ballerina (b. 1881) |
| 9900 | January 23 | Death | 1937 – Orso Mario Corbino, Italian physicist and politician (b. 1876) |