- Oct 1 Israël Querido, Dutch writer (Menschenwee), born in Amsterdam (d. 1932)
- Oct 3 Fred Clarke, American Baseball Hall of Fame outfielder and manager (Louisville Colonels, Pittsburgh Pirates; World Series 1909 [PP]), born in Winterset, Iowa (d. 1960)
- Oct 4 Ernest Blood, American Naismith Memorial Basketball Hall of Fame coach (Passaic HS, NJ, 200-1 record, 1915-24), born in Manchester, New Hampshire (d. 1955)
- Oct 8 John Cowper Powys, British writer (Wood & Stone, Wolf Solent), born in Shirley, Derbyshire (d. 1963)
- Oct 11 Emily Davison, English suffragette who died when hit by King George's horse at Epsom Derby, born in Greenwich, England (d. 1913)
- Oct 11 Harlan Fiske Stone, Chief Justice Supreme Court (1941-46), born in Chesterfield, New Hampshire (d. 1946)
- Oct 12 Ralph Vaughan Williams, English composer (Hugh the Drover), born in Down Ampney, England (d. 1958)
- Oct 14 Reginald "R.F." Doherty, British tennis player (Wimbledon 1897-1900), born in Wimbledon, England (d. 1910)
- Oct 15 Wilhelm Miklas, Austrian politician and 3rd President of Austria (1928-38), born in Krems, Lower Austria, Austria-Hungary (d. 1956)
- Oct 18 Joséphine Caroline, Belgian royal princess, and later (1935) Benedictine nun, taking the name of Sister Marie-Josephine, born in Brussels, Belgium (d. 1958)
- Oct 18 Mikhail Kuzmin, Russian writer and poet born in Yaroslavl, Russian Empire (d. 1936)
- Oct 24 Peter O'Connor, Irish athlete (1st recognised world long jump record 1901), born in Millom, England (d. 1957)
- Oct 27 Emily Post, American authority on social behaviour and writer (Etiquette), born in Baltimore, Maryland [or Oct 3rd, 1873] (d. 1960)
- Oct 31 James Hogan, Irish College Football Hall of Fame tackle (Yale), born in Glenbane, County Tipperary, Ireland (d. 1910)