- Sep 2 Henry Lawson, Australian writer and poet (n the Days When the World Was Wide and Other Verses), dies at 55
- Sep 4 Georges Sorel, French philosopher and theorist of Sorelianism, dies at 74
- Sep 5 Georgette Agutte, French painter (b. 1867)
- Sep 8 Léon Bonnat, French painter (Job), dies at 89
- Sep 10 Arpad Szendy, Hungarian composer, dies at 59
- Sep 11 Louis Coerne, American composer (Zenobia; Excalibur), and educator (The Evolution of Modern Orchestration), dies at 52
- Sep 21 Tom Armitage, cricketer (England lob bowler v Australia 1877), dies
- Sep 28 Andrejs Jurjans, Latvia's first professional classical composer, dies at 65
- Sep 30 Paul Barth, German philosopher and sociologist, dies at 64