- Apr 2 Maud Barger-Wallach, American tennis player (US Nat C'ship 1908), dies at 83
- Apr 2 Pudge Heffelfinger, American College Football Hall of Fame guard (3 x All American, Yale; first professional player 1892) and coach (Cal, Lehigh, Minnesota), dies at 86
- Apr 4 Frederick Lonsdale, British playwright (Balkan Princess), dies at 73
- Apr 5 Claude Delvincourt, French composer and pianist, dies at 66
- Apr 9 Philip Greeley Clapp, American composer and educator (University of Iowa, 1919-54), dies at 65
- Apr 10 Auguste Lumière, French engineer and filmmaker who made the 1st movie (Workers Leaving Lumière Factory), dies at 81
- Apr 10 Ludwig Curtius, German archaeologist (Die antike Kunst), dies at 79
- Apr 10 Oscar Mathisen, Norwegian speed skater (5-time World Champion all-round), dies at 65
- Apr 12 Pim Mulier, Dutch sports organizer, founded the Dutch Football and Athletics Association, Koninklijke HFC, established hockey in the Netherlands and President of the International Skating Union (1892-94), dies at 89
- Apr 13 Angus Lewis Macdonald, Canadian politician, dies at 63
- Apr 14 Lillian "Lil" Green, American blues singer and songwriter ("Romance In The Dark"), dies at 39 [or 57, or 48 - year of birth disputed]
- Apr 15 Arthur Fickenscher, American microtonal composer, and educator (University of Virginia, 1920-41), dies at 82
- Apr 15 Juan Vicente Lecuna, Venezuelan diplomat and composer, dies at 54
- Apr 17 Lucreţiu Pătrăşcanu, Romanian communist activist and sociologist, dies at 53
- Apr 25 Joseph Hergesheimer, novelist (Java Head), dies
- Apr 27 Torsten Ralf, Swedish operatic tenor (Daphne - "Apollo"), dies at 53
- Apr 28 Léon Jouhaux, French socialist and co-founder UN's ILO (Nobel Peace Prize 1951), dies at 74
- Apr 29 Ernst Heldring, Dutch ship owner and financier, dies at 82
Assassination
Drug Overdose
Gunshot Wound
Murder
Plane Crash
Suicide