- Apr 1 Ferenc Molnar, Hungarian American playwright (A Pal Utrai Fiuk) and novelist (The Paul Street Boys), dies at 74
- Apr 2 Bernard Lyot, French astronomer (Coronagraph, Lyot-filter), dies at 55
- Apr 3 Miina Sillanpää, Finnish first female minister and a key figure in the workers' movement, dies at 85
- Apr 5 Charles Collett, Chief Mechanical Engineer of the Great Western Railway (1922-41), dies at 80
- Apr 5 Henri Vandeputte, Belgian writer (L'Autre Vie), dies at 75
- Apr 11 Wadih Sabra, Lebanese composer (Kulluna lil Watan), dies at 76
- Apr 13 [Rosalie] Julia Cuypers, Flemish actress (Adelaarsjong), dies at 79
- Apr 21 Leslie Banks, English actor (Henry V, 21 Days, Eye Witness), dies at 61
- Apr 21 Stafford Cripps, British Labour politician, dies at 62
- Apr 23 Elisabeth Schumann, German soprano, dies at 63
- Apr 23 Julius Freed [Fried], American namesake and co-founder of Orange Julius fast food chain, dies at 64
- Apr 23 Minus van Looi [Benjamin van der Voort], Flemish writer, dies at 60
- Apr 27 Guido Castelnuovo, Italian mathematician, dies at 86
- Apr 30 Charles Radoux-Rogier, Belgian composer, dies at 74
Assassination
Drug Overdose
Gunshot Wound
Murder
Plane Crash
Suicide