Portal:Germany/Anniversaries/October/October 31
- 1517 – Martin Luther posts his 95 Theses at the Castle Church in Wittenberg
- 1815 – Birth of mathematician Karl Weierstraß
- 1835 – Birth of chemist Adolf von Baeyer, winner of the 1905 Nobel Prize in Chemistry for his synthesis of indigo dye
- 1920 – Birth of football player Fritz Walter, captain of the Germany national football team winnning the 1954 FIFA World Cup