- Sep 13 Kartini, Indonesian national heroine, dies at 25
- Sep 18 Herbert von Bismarck, German politician/son of Otto, dies
- Sep 21 Chief Joseph, US indian chief (Nez Perces), dies
- Sep 24 Niels Ryberg Finsen, Danish physician and phototherapist (Nobel 1903), dies at 43
- Sep 26 Lafcadio Hearn, American author (Glimpses of Unfamiliar Japan), dies at 54
- Sep 26 John F. Stairs, Canadian businessman and statesman (b. 1848)
- Sep 29 Niels Ryberg Finnen, Danish physician (Nobel 1903), dies
- Sep 30 Sigurd Lie, Norwegian composer and conductor, dies of tuberculosis at 33