- Apr 2 Alice Berend, writer, dies
- Apr 4 Cyril Christiani, West Indian cricket wicketkeeper (4 Tests; British Guiana), dies of malaria at 24
- Apr 8 Harold Baumgartner, South African cricketer (took 2-99 lefty in test for South Africa), dies at 54
- Apr 10 (Joseph) "King" Oliver, American jazz cornet player, composer, bandleader ("Dippermouth Blues"), and mentor to Louis Armstrong, dies of arteriosclerosis and related heart attack at 56 [1] [2]
- Apr 10 Nana Annor Adjaye, Pan-Africanist, dies in W Nzima Ghana
- Apr 11 Cristóbal Torriente, Cuban Baseball HOF outfielder (NgL NL batting champion 1920; NgL NL pennant 1920–22; Chicago American Giants; career batting average: .352), dies from alcoholism & tuberculosis at 44
- Apr 12 Feodor Chaliapine, Russian operatic bass-baritone singer (Man and Mask: Forty Years in the Life of a Singer), dies of leukemia at 65
- Apr 13 Grey Owl [Archibald Belaney], Canadian pioneering conservationist (who pretended to be part Native American), dies of pneumonia at 49 [1]
- Apr 14 Gillis Grafström, Swedish figure skater (Olympic gold 1920, 24, 28), dies of blood poisoning at 44
- Apr 15 César Vallejo, Peruvian-French poet and novelist (Los Heraldos Negros; Trilce; Russia in 1931), dies from recurrence of childhood malaria at 46
- Apr 16 Bertram Mills, British circus proprietor (Bertram Mills Circus), dies at 70
- Apr 16 Steve Bloomer, English footballer (b. 1874)
- Apr 18 Richard Terry, English organist and musicologist, dies at 73
- Apr 19 Henry John Newbolt, English poet and author (Studies Green & Gray), dies at 75
- Apr 21 Muhammad Iqbal, British East Indies lawyer and Pakistan national hero, dies at 65
- Apr 24 George Grey Barnard, American sculptor, dies at 74
- Apr 26 Edmund Husserl, German philosopher (founded School of Phenomenology), dies at 79
- Apr 27 Edmond Rubbens, Belgian minister to Colonies, dies at 44
Assassination
Drug Overdose
Gunshot Wound
Murder
Plane Crash
Suicide