| 12181 | January 30 | Birth | 1990 – Andrew McCullough, Australian rugby league footballer |
| 12182 | January 30 | Birth | 1991 – Stefan Elliott, Canadian ice hockey player |
| 12183 | January 30 | Birth | 1995 – Misaki Iwasa, Japanese singer |
| 12184 | January 30 | Birth | 1995 – Viktoria Komova, Russian gymnast |
| 12185 | January 30 | Birth | 1995 – Thia Megia, American singer |
| 12186 | January 30 | Birth | 1995 – Víctor Sánchez, Venezuelan baseball player (d. 2015) |
| 12187 | January 30 | Birth | 2005 – Prince Hashem bin Al-Abdullah of Jordan |
| 12188 | January 30 | Death | 680 – Balthild, Frankish queen (b. 626) |
| 12189 | January 30 | Death | 1030 – William V, Duke of Aquitaine (b. 969) |
| 12190 | January 30 | Death | 1181 – Emperor Takakura of Japan (b. 1161) |
| 12191 | January 30 | Death | 1240 – Pelagio Galvani, Leonese cardinal (b. 1165) |
| 12192 | January 30 | Death | 1314 – Nicholas III of Saint Omer |
| 12193 | January 30 | Death | 1384 – Louis II, Count of Flanders (b. 1330) |
| 12194 | January 30 | Death | 1574 – Damião de Góis, Portuguese historian and philosopher (b. 1502) |
| 12195 | January 30 | Death | 1606 – Everard Digby, English conspirator (b. 1578) |
| 12196 | January 30 | Death | 1649 – Charles I of England (b. 1600) |
| 12197 | January 30 | Death | 1730 – Peter II of Russia (b. 1715) |
| 12198 | January 30 | Death | 1836 – Betsy Ross, American seamstress, designed the American Flag (b. 1752) |
| 12199 | January 30 | Death | 1849 – Jonathan Alder, American farmer (b. 1773) |
| 12200 | January 30 | Death | 1858 – Coenraad Jacob Temminck, Dutch zoologist and ornithologist (b. 1778) |
| 12201 | January 30 | Death | 1867 – Emperor Kōmei of Japan (b. 1831) |
| 12202 | January 30 | Death | 1869 – William Carleton, Irish author (b. 1794) |
| 12203 | January 30 | Death | 1881 – Arthur O'Shaughnessy, English poet and herpetologist (b. 1844) |
| 12204 | January 30 | Death | 1889 – Rudolf, Crown Prince of Austria (b. 1858) |
| 12205 | January 30 | Death | 1926 – Barbara La Marr, American actress and screenwriter (b. 1896) |
| 12206 | January 30 | Death | 1928 – Johannes Fibiger, Danish physician and academic Nobel Prize laureate (b. 1867) |
| 12207 | January 30 | Death | 1929 – La Goulue, French model and dancer (b. 1866) |
| 12208 | January 30 | Death | 1934 – Frank Nelson Doubleday, American publisher founded the Doubleday Publishing Company (b. 1862) |
| 12209 | January 30 | Death | 1937 – Alfred Grütter, Swiss target shooter (b. 1860) |
| 12210 | January 30 | Death | 1947 – Frederick Blackman, British plant physiologist (b. 1866) |