Portal:Germany/Anniversaries/April/April 17
- 1521 - Martin Luther speaks to the assembly at the Diet of Worms, refusing to recant his teachings.
- 1574 - Death of classical scholar Joachim Camerarius
- 1794 - Birth of botanist Carl Friedrich Philipp von Martius
- 1870 - Birth of architect Max Berg, who built the Hala Ludowa in Wrocław
- 1899 - Death of mathematician Wilhelm Jordan