- Sep 1 First forestry school in America opens at Biltmore Estate, North Carolina
Kitchener Attacks Omdurman
Sep 1 Lord Kitchener's troops attack Omdurman, Sudan
- Sep 2 Battle of Omdurman: Lord Kitchener retakes Sudan for Britain
- Sep 2 Machine gun 1st used in battle
- Sep 6 Lord Kitchener destroys Mahdi's tomb in Omdurman
- Sep 9 Ottawa Football Club re-organizes into the Rough Riders
- Sep 10 Empress Elizabeth of Austria is assassinated by anarchists Luigi Lucheni
- Sep 10 Lord Kitchener sails from Khartoum to Fashoda to confront French attempts to claim territory in the Sudan
- Sep 13 20,000 Paris construction workers go on strike
- Sep 15 National Afro-American Council forms in Rochester NY
- Sep 18 Lord Kitchener's ships reach Fashoda, Sudan
- Sep 21 Empress Dowager Cixi seizes power and ends the Hundred Days' Reform in China, imprisoning the Guangxu Emperor
- Sep 26 Victor Herbert and Harry Smith's operetta "The Fortune Teller" premieres at Wallack's Theater, New York City
- Sep 29 Wassoulou Empire leader Samori Ture captured by French troops in West Africa ending his 20 year rule