- Oct 1 Leonid Sabaneyev, Russian composer, born in Moscow (d. 1968)
William Boeing (1881-1956)
Oct 1 American aviation pioneer who founded The Boeing Company, born in Detroit, Michigan
- Oct 2 Ferdinand [Fred] Barlow, French composer, born in Mulhouse (d. 1951)
- Oct 3 Ludomir Michał Rogowski, Polish composer, born in Lublin, Poland (d. 1954)
- Oct 4 Walther von Brauchitsch, German field marshal, born in Berlin, Germany (d. 1948)
- Oct 5 Otto V. Kuusinen, Finnish politician (founder of the Finnish Communist Party), born in Laukaa, Finland (d. 1964)
- Oct 7 Mikhail Drozdovsky, Russian general (d. 1918)
- Oct 11 Hans Kelsen, Austrian legal philosopher and political philosopher, born in Prague, Bohemia, Austria-Hungary (d. 1973)
- Oct 11 Stark Young, American writer (So Red the Rose), born in Como, Mississippi (d. 1963)
- Oct 12 Carlos Lopez Buchardo, Argentine composer, born in Buenos Aires (d. 1948)
- Oct 12 William Nigh, American director (Ape, Doomed to Die, Mr Wong), born in Berlin, Wisconsin (d. 1955)
- Oct 13 George Bacovia [Vasiliu], Romanian poet and composer (Plumb), born in Bacău, Romania (d. 1957)
P. G. Wodehouse (1881-1975)
Oct 15 British-American writer (Bertie Wooster novels), born in Guildford, England
Pablo Picasso (1881-1973)
Oct 25 Spanish painter (The Three Dancers, Guernica) and sculptor who co-founded the Cubist movement, born in Malaga, Andalusia, Spain
- Oct 26 Margaret Wycherly, British actress (Keeper of the Flame), born in London, England (d. 1956)
- Oct 28 Bruno Söderström, Swedish athlete (Olympic silver pole vault & bronze javelin 1906; bronze pole vault 1908; popularized bowling in Sweden), born in Stockholm, Sweden (d. 1969)
- Oct 28 Vin Coutie, Australian rules footballer, born in Melbourne, Australia (d. 1951)
- Oct 30 Elizabeth Madox Roberts, American poet and novelist (The Time of Man), born in Perryville, Kentucky (d. 1941)
- Oct 30 Lena Christ, German writer (The Rumplhanni), born in Glonn, Bavaria (d. 1920)