- Apr 1 Steve Race, British composer, jazz pianist and radio and television presenter (BBC's "My Music", 1967-94), born in Lincoln, England (d. 2009)
- Apr 3 Robert Karvelas, American actor (Get Smart - "Larabee"), born in New York City (d. 1991)
- Apr 5 Christopher Hewett, British actor (Mr. Belvedere; The Producers) and theater director, born in Worthing, Sussex, England (d. 2001)
Peter Ustinov (1921-2004)
Apr 16 British actor, author, journalist, comedian and broadcaster (Death on the Nile; Logan's Run; Billy Budd), born in London, England
- Apr 20 Janine Sutto, French Canadian actress and comedian (Guide de la petite vengeance), born in Paris, France (d. 2017)
- Apr 21 Jack Fletcher, American actor (Calucci's Department, Once Upon a Mattress), born in Forest Hills, New York (d. 1990)
- Apr 23 Janet Blair [Martha Janet Lafferty], American singer and actress (Leave it to the Girls, Smith Family), born in Altoona, Pennsylvania (d. 2007)
- Apr 28 Rowland Evans, American news reporter (CNN-Evans & Novak), born in Whitemarsh, Pennsylvania (d. 2001)
- Apr 29 Tommy Noonan, American actor, screenwriter and producer (Gentlemen Prefer Blondes, Promises Promises), born in Bellingham, Washington (d. 1968)
About April 1921
How Old? 103 years old
Generation: Greatest Generation
Leap Year: No
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