| 136951 | December 3 | Birth | 1987 – Michael Angarano, American actor |
| 136952 | December 3 | Birth | 1987 – Erik Grönwall, Swedish singer-songwriter (H.E.A.T) |
| 136953 | December 3 | Birth | 1987 – Brian Robiskie, American football player |
| 136954 | December 3 | Birth | 1987 – Alicia Sacramone, American gymnast |
| 136955 | December 3 | Birth | 1989 – Selçuk Alibaz, Turkish footballer |
| 136956 | December 3 | Birth | 1990 – Sharon Fichman, Canadian-Israeli tennis player |
| 136957 | December 3 | Birth | 1991 – Ekaterine Gorgodze, Georgian tennis player |
| 136958 | December 3 | Birth | 1991 – Masahiro Usui, Japanese actor |
| 136959 | December 3 | Birth | 1992 – Cristian Ceballos, Spanish footballer |
| 136960 | December 3 | Birth | 1992 – Joseph McManners, English singer-songwriter and actor |
| 136961 | December 3 | Birth | 1993 – Kyle Jean-Baptiste, American actor and singer (d. 2015) |
| 136962 | December 3 | Birth | 1994 – Jake T. Austin, American actor |
| 136963 | December 3 | Birth | 1995 – Anna Iriyama, Japanese singer (AKB48) |
| 136964 | December 3 | Birth | 1997 – Hayley Okines, English activist (d. 2015) |
| 136965 | December 3 | Birth | 2005 – Prince Sverre Magnus of Norway |
| 136966 | December 3 | Death | 311 – Diocletian, Roman emperor (b. 244) |
| 136967 | December 3 | Death | 649 – Birinus, French-English bishop and saint (b. 600) |
| 136968 | December 3 | Death | 1154 – Pope Anastasius IV (b. 1073) |
| 136969 | December 3 | Death | 1265 – Odofredus, Italian jurist |
| 136970 | December 3 | Death | 1533 – Vasili III of Russia (b. 1479) |
| 136971 | December 3 | Death | 1552 – Francis Xavier, Spanish missionary and saint (b. 1506) |
| 136972 | December 3 | Death | 1610 – Honda Tadakatsu, Japanese general and daimyo (b. 1548) |
| 136973 | December 3 | Death | 1706 – Countess Emilie Juliane of Barby-Mühlingen (b. 1637) |
| 136974 | December 3 | Death | 1765 – Lord John Sackville, English cricketer and politician (b. 1713) |
| 136975 | December 3 | Death | 1789 – Claude Joseph Vernet, French painter (b. 1714) |
| 136976 | December 3 | Death | 1815 – John Carroll, American archbishop (b. 1735) |
| 136977 | December 3 | Death | 1845 – Gregor MacGregor, Scottish soldier and explorer (b. 1786) |
| 136978 | December 3 | Death | 1882 – Archibald Tait, Scottish-English archbishop (b. 1811) |
| 136979 | December 3 | Death | 1888 – Carl Zeiss, German physicist and lens maker, created the optical instrument (b. 1816) |
| 136980 | December 3 | Death | 1890 – Billy Midwinter, English-Australian cricketer (b. 1851) |