- Apr 1 Clementine Ogilvy Spencer-Churchill (Hozier), British barones
- Apr 3 St John Philby, British explorer and Arabist, born in Badulla, British Ceylon (d. 1960)
- Apr 3 Bud Fisher, American cartoonist (Mutt and Jeff), born in Chicago, Illinois (d. 1954)
- Apr 5 Dimitrie Cuclin, Romanian composer, born in Galați County, Romania (d. 1978)
- Apr 6 Carlos Leon Salzedo, composer
- Apr 8 Dimitrios Levidis, composer
- Apr 13 Pieter S Gerbrandy, Dutch lawyer/premier in London (1940-45)
- Apr 13 Georg Lukács, Hungarian-born philosopher and literary critic (d. 1971)
- Apr 13 Vean Gregg, American baseball player (d. 1964)
- Apr 15 Tadeusz Kutrzeba, Polish general (d. 1947)
- Apr 16 Leo Weiner, Hungarian composer (Fasching), born in Budapest, Austria-Hungary (d. 1960)
- Apr 17 Cecil Burleigh, American composer, born in Wyoming, New York (d. 1980)
- Apr 17 Isak Dinesen [Karen Blixen-Finecke], Danish baroness and writer (Out of Africa), born in Rungsted, Zealand, Denmark (d. 1962)
- Apr 29 Egon E Kisch, Czech writer/journalist (Rasende Reporter)
- Apr 29 Wallingford Riegger, Albany Georgia, composer (Bacchangle)
- Apr 30 Luigi Russolo, composer