| 139951 | December 11 | Birth | 1996 – Jack Griffo, American actor and singer |
| 139952 | December 11 | Birth | 1996 – Hailee Steinfeld, American actress |
| 139953 | December 11 | Death | 384 – Pope Damasus I (b. 305) |
| 139954 | December 11 | Death | 861 – Al-Mutawakkil, Iraqi caliph (b. 822) |
| 139955 | December 11 | Death | 969 – Nikephoros II Phokas, Byzantine emperor (b. 912) |
| 139956 | December 11 | Death | 1121 – Al-Afdal Shahanshah, Israeli-Egyptian political advisor (b. 1066) |
| 139957 | December 11 | Death | 1241 – Ögedei Khan, Mongolian emperor (b. 1186) |
| 139958 | December 11 | Death | 1282 – Llywelyn ap Gruffudd, Welsh prince (b. 1223) |
| 139959 | December 11 | Death | 1282 – Michael VIII Palaiologos, Byzantine emperor (b. 1225) |
| 139960 | December 11 | Death | 1532 – Pietro Accolti, Italian cardinal (b. 1455) |
| 139961 | December 11 | Death | 1582 – Fernando Álvarez de Toledo, 3rd Duke of Alba, Spanish general and politician, 12th Constable of Portugal (b. 1508) |
| 139962 | December 11 | Death | 1686 – Louis, Grand Condé, French general (b. 1621) |
| 139963 | December 11 | Death | 1694 – Ranuccio II Farnese, Duke of Parma (b. 1630) |
| 139964 | December 11 | Death | 1737 – John Strype, English clergyman, historian, and author (b. 1643) |
| 139965 | December 11 | Death | 1747 – Edmund Curll, English bookseller and publisher (b. 1675) |
| 139966 | December 11 | Death | 1797 – Richard Brocklesby, English physician (b. 1722) |
| 139967 | December 11 | Death | 1826 – Maria Leopoldina of Austria (b. 1797) |
| 139968 | December 11 | Death | 1840 – Emperor Kōkaku of Japan (b. 1771) |
| 139969 | December 11 | Death | 1872 – Kamehameha V of Hawaii (b. 1830) |
| 139970 | December 11 | Death | 1880 – Oliver Winchester, American businessman, founded the Winchester Repeating Arms Company (b. 1810) |
| 139971 | December 11 | Death | 1892 – William Milligan, Scottish theologian and scholar (b. 1821) |
| 139972 | December 11 | Death | 1906 – Charles Townsend, American fencer, engineer, and academic (b. 1872) |
| 139973 | December 11 | Death | 1918 – Ivan Cankar, Slovenian author, poet, and playwright (b. 1876) |
| 139974 | December 11 | Death | 1920 – Olive Schreiner, South African author and activist (b. 1855) |
| 139975 | December 11 | Death | 1936 – Myron Grimshaw, American baseball player (b. 1875) |
| 139976 | December 11 | Death | 1937 – Jaan Anvelt, Estonian politician (b. 1884) |
| 139977 | December 11 | Death | 1938 – Christian Lous Lange, Norwegian historian and educator, Nobel Prize laureate (b. 1869) |
| 139978 | December 11 | Death | 1941 – John Gillespie Magee, Jr., American pilot and poet (b. 1922) |
| 139979 | December 11 | Death | 1941 – Émile Picard, French mathematician and academic (b. 1856) |
| 139980 | December 11 | Death | 1945 – Charles Fabry, French physicist (b. 1867) |