- Sep 4 Leo Bittermieux, Flemish missionary (Congo)
- Sep 6 Jean-Louis Pisuisse, Dutch night club performer (French governess), born in Flushing, Netherlands (d. 1927)
- Sep 7 Attilio Brugnoli, composer
- Sep 7 Kurt von Wolfurt, composer
- Sep 8 Roelof Kranenburg, Dutch social democratic chairman (1st Chamber)
- Sep 9 Viking Eggeling, Swedish artist/filmmaker (Diagonal Symphony)
H. L. Mencken
Sep 12 Henry Louis Mencken, American newspaperman and critic (Prejudices), born in Baltimore, Maryland (d. 1956)
H. L. Mencken
- Sep 14 Paul Fechter, German writer (Der Zauberer Gottes)
- Sep 14 Metropolitan Benjamin (Fedchenkov), Orthodox missionary and writer (d. 1961)
- Sep 14 Archie Hahn, American athlete (d. 1955)
- Sep 16 Alfred Noyes, British poet/essayist (Loom of Years, Highwayman)
- Sep 20 Ildebrando Pizzetti, composer
- Sep 20 Louise Peete, American murderess (d. 1947)
- Sep 22 Asser B Kleerekoper, journalist/2nd-Member of parliament (SDAP)
- Sep 22 Dame Christabel Pankhurst, English suffragist (d. 1958)
- Sep 23 John Boyd Orr, nutritionist, UN's FAO (Nobel 1949)
- Sep 28 Ralph Edward Flanders, Barnet VT, (Sen-VT)