- Sep 1 Jacobus W G Balfoort, Dutch actor (Heimwee, Head On), dies at 57
- Sep 6 John S. Mccain Snr., US admiral, (WW II-Pacific Ocean), dies of a heart attack at 61
- Sep 10 Väinö Raitio, Finnish composer, dies at 54
- Sep 15 Anton (Friedrich Wilhelm) von Webern, Austrian composer, shot by American soldier on patrol at 61
- Sep 15 André Tardieu, Prime Minister of France (b. 1876)
- Sep 16 Johannes "Pa" van der Steur, Dutch missionary and philanthropist (Java), dies at 80
- Sep 16 John McCormack, Irish-American tenor (Irish folksongs), dies at 61
- Sep 18 "Blind" Willie Johnson, American gospel blues singer and guitarist ("Dark Was the Night, Cold Was the Ground"), dies of malarial fever, syphilis and blindness at 48
- Sep 20 William Buehler Seabrook, Writer, journalist, occultist and explorer (b. 1884)
- Sep 20 Augusto Tasso Fragoso, Brazilian president (b. 1869)
Eduard Wirths
Sep 20 Eduard Wirths, Nazi physician at Auschwitz, commits suicide at 36

Eduard Wirths
Béla Bartok
Sep 26 Béla Bartok, Hungarian composer and pianist (Concerto for Orchestra), dies at 64

Béla Bartok
- Sep 26 Richard Beer-Hofmann, Austrian writer, dies at 78