The 20t o December is the 354t day o the year (355t in lowp years) in the Gregorian Calendar, wi 11 days bidin.
- 1537 – John III o Swaden (d. 1592)
- 1789 – William Burn, Scots airchitect (d. 1870)
- 1841 – Ferdinand Buisson, French academic an politeecian, Nobel Prize laureate (d. 1932)
- 1894 – Robert Menzies, 12t Prime Meenister o Australie (d. 1978)
- 1914 – Harry F. Byrd, Jr., American lieutenant, publisher, and politician (d. 2013)
- 1914 – Robert Colquhoun, Scots penter (d. 1962)
- 1926 – Geoffrey Howe, Breetish politeecian (d. 2015)
- 1927 – Kim Young-sam, Sooth Korean sodger an politeecian, 7t Preses o Sooth Korea (d. 2015)
- 1942 – Jean-Claude Trichet, French economist an banker
- 1950 – Billy Brown, Scots fitbawer
- 1951 – Lynne Featherstone, Inglis blogger an politeecian
- 1951 – Peter May, Scots writer
- 1952 – Jenny Agutter, Inglis actress
- 1955 – Binali Yıldırım, Turkis lawyer an politeecian, Prime meenister o Turkey
- 1955 – Martin Schulz, German politeecian
- 1957 – Anna Vissi, Cypriot sangster-sangwriter an actress
- 1957 – Billy Bragg, Inglis sangster-sangwriter
- 1961 – Keith Brown, Scots politeecian
- 1980 – Ashley Cole, Inglis fitbawer
- 1980 – Martín Demichelis, Argentinian fitbawer
- 1981 – Julien Benneteau, French tennis player
- 1983 – Jonah Hill, American actor
- 1990 – JoJo, American sangster
- 217 – Pape Zephyrinus
- 1722 – Kangxi Emperor o Cheenae (b. 1654)
- 1937 – Erich Ludendorff, German general (b. 1865)
- 1968 – John Steinbeck, American novelist an short story writer, Nobel Prize laureate (b. 1902)
- 1971 – Roy O. Disney, American banker an businessman, co-foondit The Walt Disney Company (b. 1893)
- 1996 – Carl Sagan, American astronomer, astropheesicist, an cosmologist (b. 1934)
- 2001 – Léopold Sédar Senghor, Senegalese poet an politeecian, 1st Preses o Senegal (b. 1906)
- 2009 – Brittany Murphy, American actress (b. 1977)
- 2017 – Archie Duncan, Scots historian (b. 1926)
- 2019 – Matti Ahde, Finnish politeecian (b. 1945)
- Internaitional Day o Human Solidarity