Portal:Germany/Anniversaries/January/January 20
- 1488 – Birth of cartographer and cosmographer Sebastian Münster
- 1499 – Birth of humanist Sebastian Franck
- 1586 – Birth of composer Johann Hermann Schein
- 1783 – Birth of cellist and composer Justus Johann Friedrich Dotzauer
- 1942 – The Wannsee Conference meets and decides to implement the "Final Solution of the Jewish Question", starting the most deadly phase of the Holocaust