- Oct 4 Marcelo Torcuato de Alvear, President of Argentina (1922-28), born in Buenos Aires, Argentina (d. 1942)
Fred Hovey (1868-1945)
Oct 7 American tennis player (US Nationals 1895), born in Newton Centre, Massachusetts
August Horch (1868-1951)
Oct 12 German engineer and automobile pioneer who founded Audi, born in Winningen, Germany
- Oct 16 Franz Ritter von Epp, German general and Nazi official (Reichsstatthalter for Bavaria 1933-45), born in Munich, Bavaria (d. 1947)
- Oct 18 Ernst Didring, Swedish author (d. 1931)
- Oct 19 Bertha Knight Landes, American politician (1st female mayor of any major US city - Mayor of Seattle 1926-28), born in Ware, Massachusetts (d. 1943)
- Oct 23 Frederick Lanchester, English Engineer who built the first British petrol automobile (1896), born in London, England (d. 1946)
- Oct 24 Alexandra David-Néel, Belgian-French explorer and writer, born in Saint-Mandé, France (d. 1969)
- Oct 27 Annie Patterson, Irish organist, composer, and musicologist, born in Lurgan, Ireland (d. 1934)
- Oct 28 James Connolly, American athlete and author, 1st Modern Olympic Champion in 1896, born in Boston, Massachusetts (d. 1957)