| 8791 | January 20 | Birth | 1991 – Polona Hercog, Slovenian tennis player |
| 8792 | January 20 | Birth | 1991 – Jolyon Palmer, English race car driver |
| 8793 | January 20 | Birth | 1991 – Lily LaBeau, American porn actress |
| 8794 | January 20 | Birth | 1992 – Jorge Zárate, Mexican footballer |
| 8795 | January 20 | Birth | 1993 – Lorenzo Crisetig, Italian footballer |
| 8796 | January 20 | Birth | 1994 – Denis Mukhametdinov, Russian footballer |
| 8797 | January 20 | Birth | 1995 – Joey Badass, American rapper (Pro Era) |
| 8798 | January 20 | Death | 250 – Pope Fabian (b. 200) |
| 8799 | January 20 | Death | 820 – Al-Shafi‘i, Palestinian scholar and jurist (b. 767) |
| 8800 | January 20 | Death | 842 – Theophilos, Byzantine emperor (b. 813) |
| 8801 | January 20 | Death | 1156 – Henry, English-Finnish bishop and saint |
| 8802 | January 20 | Death | 1191 – Frederick VI, Duke of Swabia (b. 1167) |
| 8803 | January 20 | Death | 1410 – Martin of Aragon (b. 1356) |
| 8804 | January 20 | Death | 1479 – John II of Aragon (b. 1397) |
| 8805 | January 20 | Death | 1568 – Myles Coverdale, English bishop and translator (b. 1488) |
| 8806 | January 20 | Death | 1612 – Rudolf II, Holy Roman Emperor (b. 1552) |
| 8807 | January 20 | Death | 1663 – Isaac Ambrose, English minister and author (b. 1604) |
| 8808 | January 20 | Death | 1666 – Anne of Austria (b. 1601) |
| 8809 | January 20 | Death | 1707 – Humphrey Hody, English scholar and theologian (b. 1659) |
| 8810 | January 20 | Death | 1709 – François de la Chaise, French priest (b. 1624) |
| 8811 | January 20 | Death | 1751 – John Hervey, 1st Earl of Bristol, English politician (b. 1665) |
| 8812 | January 20 | Death | 1770 – Charles Yorke, English lawyer and politician Lord Chancellor of Great Britain (b. 1722) |
| 8813 | January 20 | Death | 1779 – David Garrick, English actor, producer, playwright, and manager (b. 1717) |
| 8814 | January 20 | Death | 1810 – Benjamin Chew, American lawyer and judge (b. 1721) |
| 8815 | January 20 | Death | 1819 – Charles IV of Spain (b. 1748) |
| 8816 | January 20 | Death | 1837 – John Soane, English architect designed the Bank of England (b. 1753) |
| 8817 | January 20 | Death | 1841 – Jørgen Jørgensen, Danish adventurer (b. 1780) |
| 8818 | January 20 | Death | 1841 – Minh Mạng, Vietnamese emperor (b. 1791) |
| 8819 | January 20 | Death | 1848 – Christian VIII of Denmark (b. 1786) |
| 8820 | January 20 | Death | 1850 – Adam Oehlenschläger, Danish poet-playwright (b. 1779) |