- Mar 10 (Leon Bismarck) "Bix" Beiderbecke, American jazz cornetist, considered one of the most influential jazz soloists of the 1920s, pianist, and composer (In A Mist), born in Davenport, Iowa (d. 1931)
- Mar 11 Lawrence Welk, American accordionist and orchestra leader (Lawrence Welk Show), born in Strasburg, North Dakota (d. 1992)
- Mar 16 Nikolai Lopatnikoff, Estonian-American composer (Variazioni Concertanti), born in Reval, Russian Empire (now Tallinn, Estonia) (d. 1976)
- Mar 22 Jochen Klepper, German writer, journalist, and hymnist, born in Beuthen, Silesia, Germany (d. 1942)
- Mar 25 Frankie Carle [Francesco Carlone], American pianist, known as "the Wizard of the Keyboard", big band and dance orchestra leader, and songwriter ("Sunrise Serenade"; "The Golden Touch"), born in Providence, Rhode Island (d. 2001)
- Mar 28 Rudolf Serkin, Bohemian-American concert pianist (noted for Beethoven interpretations), and pedagogue (Curtis Institute; Marlboro School of Music), born in Eger, Bohemia, Austro-Hungarian Empire (now Czech Republic) (d. 1991)
About March 1903
How Old? 121 years old
Generation: Greatest Generation
Leap Year: No
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