- Mar 2 Robert Simpson, British classical composer, and broadcaster (BBC), born in Leamington, Warwickshire, England (d. 1997)
- Mar 4 Halim El-Dabh, Egyptian-American pianist, darabukha drummer, and composer (Martha Graham ballet scores), born in Cairo, Egypt (d. 2017)
- Mar 6 Julius Rudel, Austrian-American conductor (NYC Opera, 1944-79), born in Vienna, Austria (d. 2014)
- Mar 8 Egbert George "Pete" Pitterson, Jamaican-British jazz trumpeter, born in Kingston, Jamaica, British West Indies (d. 1994)
- Mar 11 Astor Piazzolla, Argentinian bandoneon player, and composer (Tango Nuevo), born in Mar del Plata, Argentina (d. 1992)
- Mar 12 Gordon MacRae, American singer and actor (Oklahoma!; Carousel), born in East Orange, New Jersey (d. 1986)
- Mar 12 Ralph Shapey, American composer (Fantasy; Rituals), born in Philadelphia, Pennsylvania (d. 2002)
- Mar 13 Carlo Prosperi, Italian composer, born in Florence, Italy (d. 1990)
- Mar 14 Frank Ottersen, Norwegian jazz violinist and saxophonist (Ding, Dong, Dang), born in Oslo, Norway (d. 1971)
- Mar 19 Harry Babasin, American jazz bassist and cellist (Dodo Marmarosa Trio), and archivist (Los Angeles Theaseum), born in Dallas, Texas (d. 1988)
- Mar 19 Robert McFerrin, Sr., American operatic baritone (Metropolitan Opera, 1955-58; singing voice for Sidney Poitier in film "Porgy and Bess"), born in Marianna, Arkansas (d. 2006) [1]
- Mar 20 Primož Ramovš, Slovenian avant-garde composer (Za Harmoniko; Tryptychon), pedagogue, and library director (Slovenian Academy of Sciences and Arts, 1945-87), born in Ljubljana, Kingdom of Serbs, Croats and Slovenes (d. 1999)
- Mar 21 Antony Hopkins [Reynolds], British composer, pianist, conductor (Intimate Opera Company, 1954-62), writer, and radio broadcaster (Talking About Music, 1954-92), born in London, England (d. 2014)
- Mar 21 Arthur Grumiaux, Belgian concert violinist, born in Villers-Perwin, Belgium (d. 1986)
- Mar 26 Joe Loco [José Esteves, Jr], American Latin jazz pianist and arranger, born in New York City (d. 1988) [some sources give day as 27th]
- Mar 27 Harold Nicholas, American dancer known as one of the world's greatest dancers (Nicholas Brothers), born in Winston-Salem, North Carolina (d. 2000)
- Mar 30 Kan Ishii, Japanese composer (Marimo), born in Tokyo, Japan (d. 2009)
- Mar 30 Oto Ferenczy, Slovak composer, born in Brezovica, Kingdom of Serbs, Croats and Slovenes (now Kosovo) (d. 2000)
- Mar 31 Lowell Fulson, Choctaw-Cherokee-American blues guitarist and songwriter (“3 O’Clock Blues”; “Reconsider Baby”), born in Atoka, Oklahoma (d. 1999)
About March 1921
How Old? 103 years old
Generation: Greatest Generation
Leap Year: No
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