- Apr 3 Eduardo Sanchez de Fuentes, Cuban composer, born in Havana, Cuba (d. 1944)
- Apr 8 Stanisław Taczak, Polish general, commander-in-chief of the Greater Poland Uprising, born in Mieszków, Greater Poland Voivodeship, Poland (d. 1960)
- Apr 9 Julius Bittner, Austrian composer (Little Violet; Missa Austriaca), born in Vienna, Austria (d. 1939)
- Apr 14 Alexander Cambridge, 1st Earl of Athlone, Governor-General of the Union of South Africa and Canada, born in Kensington Palace, London (d. 1957)
- Apr 15 George Harrison Shull, American plant geneticist, born in Clark County, Ohio (d. 1954)
- Apr 15 Johannes Stark, German physicist (Stark Effect; Nobel Prize in Physics -1919), and Nazi sympathizer, born in Schickenhof, German Empire (d. 1957)
- Apr 18 Oskar Ernst Bernhardt, German author (In the Light of Truth: The Grail Message), born in Bischofswerda, Kingdom of Saxony, German Empire (d. 1941)
- Apr 19 Ernst Rüdin, Swiss-German psychiatrist, geneticist, and eugenicist, born in St. Gallen, Switzerland (d. 1952)
- Apr 19 Firmin Baes, Flemish painter, born in Saint-Josse-ten-Noode, Belgium (d. 1943)
- Apr 19 Jane Poupelet, French sculptor and graphic artist (la bande à Schnegg), born in Saint-Paul-Lizonne, France (d. 1932)
- Apr 24 John Russell Pope, American architect (Jefferson Memorial, National Archives and Records Administration), born in New York City (d. 1937)
- Apr 24 Willem Roelofs, Dutch painter and cartoonist (d. 1940)
Guglielmo Marconi (1874-1937)
Apr 25 Italian inventor and electrical engineer who pioneered work on long distance radio transmission (Nobel 1909), born in Bologna, Kingdom of Italy
- Apr 26 Biddy Anderson, South African cricket batsman (1 Test as captain; Western Province) and rugby union centre (3 Tests), born in Kimberley, South Africa (d. 1926)
- Apr 28 Karl Kraus, Austrian satirical writer, born in Jičín, Austrian-Hungarian Empire (d. 1936)
- Apr 28 [Hooper] Sidney Toler, American theater director, playwright, stage and screen actor (Madame X; Meeting at Midnight; Charlie Chan films, 1938-46), born in Warrensburg, Missouri (d. 1947)
- Apr 30 Cyriel Verschaeve, Belgian priest and writer (Maria Magdalena - 1928), born in Ardooie, West Flanders, Belgium (d. 1949)
Greatest Generation
Silent Generation
Baby Boomer
Generation X
Millennial
Generation Z