- Sep 3 Bessie [Annie Elizabeth] Delany, American dentist and civil rights pioneer, born in Raleigh, North Carolina (d. 1995)
- Sep 4 Sam Lanin, American sweet jazz arranger and bandleader (Roseland Orchestra; The Ipana Troubadors), born in Philadelphia, Pennsylvania (d. 1977)
- Sep 7 Roscoe Karns, American actor (Capt Shafer-Hennesey), born in San Bernardino, California (d. 1970)
- Sep 11 Noel Gallon, French composer, born in Paris (d. 1966)
- Sep 11 William Thomas Walsh, American author (Isabella of Spain), born in Waterbury, Connecticut (d. 1949)
- Sep 12 Adolph Weiss, American bassoonist and composer, born in Baltimore, Maryland (d. 1971)
- Sep 12 Pedro Albizu Campos, Advocate for Puerto Rican independence, born in Ponce, Puerto Rico (d. 1965)
- Sep 14 Ivan Vinogradov, Russian mathematician (analytic number theory), born in Velikoluksky District, Russian Empire (d. 1983)
- Sep 16 Czesław Marek, Polish composer, born in Przemyśl, Eastern Galicia, Lwów (d. 1985)
- Sep 16 Isabel Jeans, British actress (Easy Virtue, Heavens Above), born in London, England (d. 1985)
Karl Dönitz (1891-1980)
Sep 16 German naval admiral and last leader of Nazi Germany, born in Grünau, German Empire
- Sep 16 Stephanie von Hohenlohe, Austrian-German princess by her marriage to the diplomat Prince Friedrich Franz von Hohenlohe-Waldenburg-Schillingsfürst and spy, born in Vienna, Austria-Hungary (d. 1972)
- Sep 22 Jacob H "Jaap" Stotijn, Dutch oboist, and conductor (Residence Orchestra), born in The Hague, Netherlands (d. 1970)
- Sep 26 Alfred Lane, American sharp shooter (Olympic gold 1912, 20), born in New York (d. 1965)
- Sep 26 Charles Münch, French violinist, and conductor (Boston Symphony, 1949-62; Orchestre de Paris, 1967-68), born in Strasbourg, Alsace, German Empire (now France) (d. 1968)
- Sep 28 Myrtle Gonzalez, American silent film actress regarded as Hollywood's first Latin and Hispanic movie star actress (Missy, The Chalice of Courage, Her Great Part), born in Los Angeles, California (d. 1918)
- Sep 29 Fabien Sevitzky [Koussevitzky], Russian-American conductor (Indianapolis Symphony), born in Vishny Volotchok, Russia (d. 1967)
- Sep 29 Gerda Björne, Swedish actress (Familjen Bjork, Hemsoborna), born in By, Värmland, Sweden (d. 1979)