- 1066 5 Jan Edward the Confessor, King of England, dies, sparking warfare between various claimants to his throne.
- 1919 5 Jan The Spartacist revolt in Berlin, an attempt at a Bolshevik-style revolution by German Marxists, begins.
- 1919 5 Jan The Nazi party is founded by Anton Drexler, becoming the National Socialist German Workers Party in 1920.

