31 October

Harry Houdini (Erik Weisz) died on 31 October 1926

30 October

Willebrord Snel van Royen died on 30 October 1626

29 October

Jean le Rond d'Alembert died on 29 October 1783

28 October

Johan August Arfwedson died on 28 October 1841

27 October

Gilles Personne de Roberval died on 27 October 1675

26 October

Waldemar Mordecai Wolff Haffkine died on 26 October 1930

25 October

Evangelista Torricelli died on 25 October 1647

24 October

Pierre Gassendi died on 24 October 1655

23 October

Charles Glover Barkla died on 23 October 1944

22 October

Ernst von Fleischl-Marxow died on 22 October 1891

21 October

Paul Scriptoris died on 21 October 1505

20 October

Richard Francis Burton died on 20 October 1890

19 October

Ernest Rutherford died on 19 October 1937

18 October

Charles Babbage died on 18 October 1871

17 October

René Antoine Ferchault de Réaumur died on 17 October 1757

16 October

Hans Frank, Wilhelm Frick, Alfred Jodl, Ernst Kaltenbrunner, Wilhelm Keitel, Joachim von Ribbentrop, Alfred Rosenberg, Fritz Sauckel, Arthur Seyss-Inquart, and Julius Streicher all died on 16 October 1946

15 October

Herbert Henry Dow died on 15 October 1930

14 October

Douglas Mawson died on 14 October 1958

13 October

Geminiano Montanari died on 13 October 1687

12 October

Paul Hermann Müller died on 12 October 1965

11 October

Meriwether Lewis died on 11 October 1809

10 October

François Marie Charles Fourier died on 10 October 1837

9 October

Gabriele Falloppio died on 9 October 1562

8 October

Sergei Alekseevich Chaplygin died on 8 October 1942

7 October

Isabella Lucy Bird died on 7 October 1904

6 October

Otto Fritz Meyerhof died on 6 October 1951

5 October

Lodovico Ferrari died on 5 October 1565

4 October

Max Karl Ernst Ludwig Planck died on 4 October 1947

3 October

Elias Howe, Jr. died on 3 October 1867

2 October

Peter D. Ouspensky died on October 2, 1947

1 October

Charles Tennant died on 1 October 1838