Annie Jump Cannon
Apr 13 Annie Jump Cannon, US astronomer (Henry Draper catalogues), dies at 77
Annie Jump Cannon
- Apr 14 Jack Edmonson, Australian corporal in Tobruk (Victoria Cross), dies
- Apr 14 Guillermo Kahlo, German-Mexican photographer and father of Frida Kahlo, dies at 69
- Apr 16 Josiah Stamp, 1st Baron Stamp, British civil servant, industrialist, economist, statistician and banker, dies at 60
- Apr 17 Al Bowlly, British dance band vocalist (b. 1899)
- Apr 18 Alexandros Koryzis, Prime Minister of Greece in 1941, commits suicide at about 65 as German troops closed in on Athens
- Apr 19 Johanna Muller-Hermann, composer, dies at 63
- Apr 20 Barend ter Haar, Dutch lawyer, dies in Buchenwald at 49
- Apr 22 Arthur Briscoe, cricketer (South African batsman in 2 Tests), dies
- Apr 24 Karin Boye, Swedish writer (Kallocain) commits suicide at 40
- Apr 26 Jean Demoor, Belgian physician and physiologist, dies at 74
- Apr 27 Penelope Delta, Greek author (b. 1874)
- Apr 30 Edwin S. Porter, American film pioneer and producer (Jack and the Beanstalk), dies at 71