- Oct 2 Max Bruch, German composer (Kol Nidre), dies at 82
- Oct 2 Winthrop M. Crane, American politician, 40th Governor of Massachusetts, dies at 67
- Oct 13 Isaac Capadose, Dutch clergyman in the Catholic Apostolic Church, dies at 86
- Oct 15 Hendrik Peter Staal, Dutch military officer, administrator (Minister of War, 1905-07), and politician (Member of the Senate, 1907-20), dies at 75
- Oct 16 Alberto Nepomuceno, Brazilian composer and conductor (Artemis), dies at 56
- Oct 19 John Reed, American journalist and communist activist (reported on Mexican, Russian revolutions - "Ten Days that Shook the World"), dies of typhus at 32
- Oct 25 Alexander, King of Greece (1917-20), dies after ape bite at 27
- Oct 29 Ernst Perabo, German-American composer and painist, dies at 74
- Oct 31 Alphonse Desjardins, Canadian founder of the Caisses populaires Desjardins, dies at 65
Assassination
Drug Overdose
Gunshot Wound
Murder
Plane Crash
Suicide