| 11971 | January 30 | Event | 1972 – The Troubles: Bloody Sunday: British Paratroopers open fire on and kill fourteen unarmed civil rights/anti-internment marchers in Derry, Northern Ireland. |
| 11972 | January 30 | Event | 1972 – Pakistan withdraws from the Commonwealth of Nations. |
| 11973 | January 30 | Event | 1975 – The Monitor National Marine Sanctuary is established as the first United States National Marine Sanctuary. |
| 11974 | January 30 | Event | 1979 – A Varig Boeing 707-323C freighter, flown by the same commander as Flight 820, disappears over the Pacific Ocean 30 minutes after taking off from Tokyo. |
| 11975 | January 30 | Event | 1982 – Richard Skrenta writes the first PC virus code, which is 400 lines long and disguised as an Apple boot program called "Elk Cloner". |
| 11976 | January 30 | Event | 1989 – Closure of the American embassy in Kabul, Democratic Republic of Afghanistan. |
| 11977 | January 30 | Event | 1994 – Péter Lékó becomes the youngest chess grandmaster. |
| 11978 | January 30 | Event | 1995 – Workers from the National Institutes of Health announce the success of clinical trials testing the first preventive treatment for sickle-cell disease. |
| 11979 | January 30 | Event | 2000 – Off the coast of Ivory Coast, Kenya Airways Flight 431 crashes into the Atlantic Ocean, killing 169. |
| 11980 | January 30 | Event | 2003 – The Kingdom of Belgium officially recognizes same-sex marriages. |
| 11981 | January 30 | Event | 2013 – Naro-1 becomes the first carrier rocket launched by South Korea. |
| 11982 | January 30 | Birth | 58 BC – Livia, Roman wife of Augustus (d. 29) |
| 11983 | January 30 | Birth | 133 – Didius Julianus, Roman emperor (d. 193) |
| 11984 | January 30 | Birth | 1563 – Franciscus Gomarus, Dutch theologian and academic (d. 1641) |
| 11985 | January 30 | Birth | 1615 – Thomas Rolfe, American son of Pocahontas (d. 1675) |
| 11986 | January 30 | Birth | 1661 – Charles Rollin, French historian and educator (d. 1741) |
| 11987 | January 30 | Birth | 1697 – Johann Joachim Quantz, German flute player and composer (d. 1773) |
| 11988 | January 30 | Birth | 1703 – François Bigot, French politician (d. 1778) |
| 11989 | January 30 | Birth | 1720 – Charles De Geer, Swedish entomologist and archaeologist (d. 1778) |
| 11990 | January 30 | Birth | 1754 – John Lansing, Jr., American lawyer and politician (d. 1829) |
| 11991 | January 30 | Birth | 1775 – Walter Savage Landor, English poet and author (d. 1864) |
| 11992 | January 30 | Birth | 1781 – Adelbert von Chamisso, German botanist and poet (d. 1838) |
| 11993 | January 30 | Birth | 1816 – Nathaniel P. Banks, American general and politician, 24th Governor of Massachusetts (d. 1894) |
| 11994 | January 30 | Birth | 1822 – Franz Ritter von Hauer, Austrian geologist and curator (d. 1899) |
| 11995 | January 30 | Birth | 1832 – Infanta Luisa Fernanda, Duchess of Montpensier (d. 1897) |
| 11996 | January 30 | Birth | 1841 – Félix Faure, French politician, 7th President of France (d. 1899) |
| 11997 | January 30 | Birth | 1844 – Richard Theodore Greener, American diplomat and attorney (d.1922) |
| 11998 | January 30 | Birth | 1846 – Angela of the Cross, Spanish nun and saint (d. 1932) |
| 11999 | January 30 | Birth | 1852 – Ion Luca Caragiale, Romanian playwright and poet (d. 1912) |
| 12000 | January 30 | Birth | 1859 – Tony Mullane, Irish-American baseball player and manager (d. 1944) |