- Sep 1 Bobby Walthour Sr., American cyclist (motor-pacing World Championships gold 1904-05; Madison Square Garden 6-Day Race 1901, 03), dies at 71
- Sep 7 José Clemente Orozco, Mexican painter (b. 1883)
Richard Strauss
Sep 8 Richard Strauss, German composer (Also sprach Zarathustra, Don Quixote), dies at 85
August Krogh
Sep 13 August Krogh, Danish zoophysiologist, dies at 75
- Sep 18 Frank Morgan [Francis Wuppermann], American silent and sound film character actor (The Wizard of Oz; The Affairs of Cellini), dies of a heart attack at 59
- Sep 19 Will Cuppy, American humorist (The Decline and Fall of Practically Everybody), dies at 65
- Sep 19 George Shiels, Irish dramatist (b. 1886)
- Sep 20 Nikolaos Skalkottas, Greek composer, dies at 45
- Sep 20 Richard Dix, American actor (10 Commandments, Cimarron, The Ghost Ship), dies from a heart attack at 56
- Sep 22 Kim Jong-suk, Wife of Kim Il-sung, mother of Kim Jung-Il, "The Heroine of the Anti-Japanese Revolution", dies at 31
- Sep 22 Sam Wood, American communist fighter and director (For Whom the Bell Tolls), dies at 66
- Sep 24 Pierre de Bréville, French composer, author and professor (Une histoire du théâtre lyrique en France), dies at 88