- Apr 4 Jason Robards Sr, American actor (Acapulco, Isle of the Dead), dies from a heart attack at 70
- Apr 5 Jacobus Old, Dutch architect (De Stijl movement), dies at 73
- Apr 5 Julius Harrison, English composer, dies at 78
- Apr 6 Otto Struve, Russian-American astronomer (discoveries in stellar spectroscopy at Yerkes observatory), dies at 65
- Apr 9 Eddie Edwards, American jazz trombonist, dies at 71
- Apr 12 Alfred Métraux, Swiss anthropologist, dies at 60
- Apr 12 Herbie Nichols, American jazz pianist and composer ("Lady Sings the Blues"), dies of leukemia at 43
- Apr 14 Gwen Lally, English pageant master and actress (only played male roles), dies at 81 [1]
- Apr 15 Edward "Carji" Greeves, Australian Rules Football midfielder (winner inaugural Brownlow Medal 1924), dies at 59
- Apr 18 Meyer Jacobstein, American politician, dies at 83
- Apr 30 Bryant Washburn, American actor (Exposure, Millionaire Kid, Nabonga), dies at 74
Assassination
Drug Overdose
Gunshot Wound
Murder
Plane Crash
Suicide