- Sep 3 Eugene Pallette, American actor (The Adventures of Robin Hood, The Mark of Zorro), dies at 65
- Sep 5 Eugen Schiffer, German lawyer and liberal politician, dies at 94
- Sep 7 Bud Fisher, American cartoonist (Mutt and Jeff), dies at 69
- Sep 9 Alfred Gradstein, Polish composer, dies at 49
- Sep 10 Peter Anders, German opera singer, dies at 46
- Sep 11 Licinio Refice, Italian priest and composer (Cecilia), dies at 69
- Sep 19 Tibor Harsányi, Hungarian composer, dies at 56
- Sep 21 Kokichi Mikimoto, Japanese inventor (b. 1858)
- Sep 24 Edward Pilgrim, British homeowner who committed suicide due to housing bureaucracy scandal, hangs himself at 53
- Sep 25 Eugenio d' Ors y Rovira, Spanish essayist/philosopher, dies at 71
- Sep 26 Ellen Roosevelt, American tennis player (US Nat C'ship 1890), dies at 86