- Sep 3 American yacht Reliance (largest gaff-rigged cutter ever built) defends America's Cup for the NYYC beating UK challenger Shamrock III off the New Jersey shore for a 3-0 series win
- Sep 7 Federation of American Motorcyclists organized in NY
- Sep 9 6 km long Engadin-railroad tunnel in Switzerland inaugurated
- Sep 11 The first race at The Milwaukee Mile in West Allis, Wisconsin is held. The oldest major speedway in the world.
Railroad Strike
Sep 15 Queen Wilhelmina calls Dutch railroad strikers "criminals"
Leopold Denies Cruelty
Sep 19 King Leopold II denies Belgian cruelty in Congo
- Sep 21 First cowboy film "Kit Carson" premieres in US
PM Alfred Deakin
Sep 24 Alfred Deakin succeeds Edmund Barton as Prime Minister of Australia
- Sep 24 Bill Bradley becomes 1st Cleveland baseball player (Cleveland Naps) to hit for cycle
- Sep 27 Wreck of the Old 97, a train crash made famous by the song of the same name.
- Sep 30 New Gresham's School officially opened by Field Marshal Sir Evelyn Wood in Norfolk, England (expansion of original school founded 1555)
Authors
Civil Rights Activists
Inventors
Kings
Revolutionaries
Scientists