- Apr 1 George II, King of Greece (1922-1924, and 1935-1947), dies of arteriosclerosis at 56
- Apr 2 Joseph Hardstaff, cricket (311 runs in 5 Tests for Eng 1907-08), dies
- Apr 4 William O'Donnell, Irish politician (b. ?)
- Apr 6 Vaclav Kapral, composer, dies at 58
- Apr 6 Herbert Backe, German Nazi politician (b. 1896)
Henry Ford
Apr 7 Henry Ford, American industrialist and auto maker (Ford Model T), dies at 83
Henry Ford
- Apr 9 Konrad Friedrich Noetel, composer, dies at 43
- Apr 11 Louise Peete, American convicted serial killer, dies at 66
- Apr 12 Christian F L Leipoldt, South African writer (Die Moormansgat), dies
- Apr 16 Rudolf Höß, commandant of the Auschwitz concentration camp (b. 1900)
- Apr 18 Benny Leonard, lightweight boxing champ (1917-25), dies at 51
- Apr 18 Jozef Tiso, Slovak politician (President of the First Slovak Republic), dies at 59
- Apr 20 Christian X, King of Denmark (1912-47), dies at 76
- Apr 24 Willa Cather, American writer (My Ántonia), dies at 73
- Apr 29 Irving Fisher, US economist, dies at 80