- Sep 1 Tinker, Evers, & Chance appear together for 1st time
- Sep 2 "A Trip To The Moon", the first sci-fi film, released
- Sep 3 Pittsburgh Pirates, win earliest pennent (full season)
- Sep 3 Start of Sherlock Holmes "Adventure of Illustrious Client"
- Sep 7 In Australia, the whole nation observes a 'day of humiliation' and prays for rain, as a terrible drought kills livestock and threatens crops; rain begins to appear on 10 September
- Sep 10 Utrecht soccer team UVV forms
- Sep 17 US protests anti-semitism in Romania
- Sep 20 Chicago White Sox Jim Callahan no-hits Detroit Tigers, 3-0
- Sep 24 Start of Sherlock Holmes "Adventure of Red Circle" (BG)
- Sep 29 Impresario David Belasco opens his 1st Broadway theater