Portal:Germany/Anniversaries/April/April 20
- 1494 - Birth of Protestant reformer Johannes Agricola
- 1643 - Death of composer Christoph Demantius
- 1889 - Birth of Nazi dictator Adolf Hitler
- 1918 - Death of physicist Karl Ferdinand Braun, recipient of the 1909 Nobel Prize in Physics
- 1998 - The terrorist group Red Army Faction announces their dissolution