- Oct 4 Engelbert Dollfuss, Austrian right-wing politician (Chancellor, 1932-34), killed by Nazis, born in Texingtal, Austria (d. 1934)
- Oct 4 Gaston Chevrolet, French auto racer (Indianapolis 500 1920), born in Beaune, Côte-d'Or, France (d. 1920)
- Oct 4 Hermann Glauert, British aerodynamicist, born in Sheffield, Yorkshire (d. 1934)
- Oct 4 Luis Trenker, South Tyrolean film producer, director and actor (Berge in Flammen), born in Urtijëi, Tyrol (d. 1990)
- Oct 5 Remington Kellogg, American naturalist and director (U.S. National Museum), born in Davenport, Iowa (d. 1969)
- Oct 7 Dwain Esper, American film director (The Seventh Commandment), born in Washington State (d. 1982)
- Oct 9 Ivo Andric, Yugoslavian novelist (Bridge on Drina, Nobel 1961), born in Dolac, Travnik, Bosnia and Herzegovina (d. 1975)
- Oct 9 Marina Tsvetaeva, Russian poet (The Train of Life), born in Moscow (d. 1941)
- Oct 10 Earle Dickson, American inventor (Band-Aid), born in Grandview, Tennessee (d. 1961)
- Oct 12 Gilda dalla Rizza, Italian soprano, born in Verona, Italy (d. 1975)
- Oct 14 Sumner Welles, American diplomat (Good neighbor policy), born in New York (d. 1961)
- Oct 17 Herbert Howells, British organist, composer (chiefly of Anglican Church scared music), and teacher, born in Lydney, Gloucestershire England (d. 1983)
- Oct 17 Otakar Jeremiáš, Czech composer and conductor, born in Písek, Bohemia (d. 1962)
- Oct 17 Theodor Eicke, Nazi official (d. 1943)
- Oct 19 Ilmari Hannikainen, Finnish pianist and composer, born in Jyväskylä (d. 1955)
- Oct 23 Milton "Gummo" Marx, American actor and comedian (Marx Brothers), born in New York City (d. 1977)
- Oct 24 Kurt Huber, German college professor and member of anti-Nazi resistance group Weisse Rose (White Rose), born in Chur, Switzerland (d. 1943)
- Oct 27 Graciliano Ramos, Brazilian author (Vidas Secas), born in Quebrangulo, Brazil (d. 1953)
- Oct 27 Victor E. van Vriesland, Dutch poet (Mirror of Dutch Poetry), born in Haarlem, Netherlands (d. 1974)
- Oct 28 Eduard Jan Dijksterhuis, Dutch historian of science (biography of Archimedes), born in Tilburg, Netherlands (d. 1965)
- Oct 28 Ludwig Strauss, German-Israeli writer (Night Watch), born in Aachen, Germany (d. 1953)
- Oct 28 Ollie "Dink" Johnson, American Dixieland jazz clarinetist, pianist, and drummer, born in Biloxi, Mississippi (d. 1954)
- Oct 31 Olof Thiel, Swedish film score composer, under the pseudonym of Jacques Armand, born in Stockholm, Sweden (d. 1978)
- Oct 31 Ruth Fuller Sasaki, American Zen teacher (1st Zen Institute of America), born in Chicago, Illinois (d. 1967)