- Sep 1 Bernard O'Dowd, Australian poet, dies at 87
- Sep 2 Jonathan Mayhew Wainwright IV, American army officer, dies at 70
- Sep 5 Francis Ford, American actor (The Quiet Man), dies at 72
- Sep 5 Richard Walther Darré, Nazi politician, one of the leading 'blood and soil' ideologists (b. 1895)
- Sep 8 Fred M. Vinson, American Democratic politician, US Treasury Secretary (1945-46) and the 13th Chief Justice of US Supreme Court (1946-53), dies of a heart attack at 63
- Sep 12 Frederick Kuys, cricketer (one Test South Africa v England 1898), dies
- Sep 12 Lewis Stone, American actor (The Lost World, Prisoner of Zenda), dies of heart attack at 73
- Sep 12 Hugo Schmeisser, German weapons designer (b. 1884)
- Sep 15 Jacques Thibaud, French violinist, dies
- Sep 16 Colin G Fink, US chemist (electro-chemistry), dies
- Sep 17 Emil Ermatinger, Swiss literature historian, dies at 80
- Sep 17 Henry Holden Huss, American composer, dies at 91
- Sep 18 Charles de Tornaco, Belgian racing driver, dies at 26
- Sep 21 Roger Quilter, British composer, dies at 75
- Sep 22 William Brann, South African cricketer (3 Tests for South Africa), dies at 54
- Sep 24 Berthold Viertel, writer, dies at 68
- Sep 25 Dimitur Poljanov, [Popov], Bulgaria poet (Iron Verses), dies
- Sep 26 Xu Beihong, Chinese painter (b. 1895)
- Sep 27 Jules-Marie Canneel, Flemish painter/caricaturist, dies at 72
Edwin Hubble
Sep 28 Edwin Hubble, American astronomer, first to announce existence of other galaxies, dies at 63
Edwin Hubble