- Sep 1 Jacobus W G Balfoort, Dutch actor (Heimwee, Head On), dies at 57
- Sep 5 Clem Hill, Australian cricket batsman and captain (49 Tests, 7 x 100, HS 191; South Australia CA), dies in a traffic accident at 68
- 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 André Tardieu, French politician, Prime Minister of France (1929-30, 1930, 1932), dies at 68
- Sep 15 Anton von Webern, Austrian composer, dies at 61 after being shot by an American soldier on patrol
- Sep 16 Johannes "Pa" van der Steur, Dutch missionary to the East Indies, philanthropist and humanitarian (established Oranje Nassau Orphanage), 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 Augusto Tasso Fragoso, Brazilian military officer and briefly president (1930), dies at 76
Béla Bartok (1881-1945)
Sep 26 Hungarian pianist, composer (Concerto for Orchestra), and ethnomusicologist, dies of leukemia at 64
- Sep 26 Richard Beer-Hofmann, Austrian writer, dies at 78