- Mar 1 Henriette Renié, French harp prodigy, composer, and teacher, dies at 80
- Mar 3 Mihailo Vukdragović, Serbian composer, conductor and pedagogue, dies at 55
- Mar 3 Willem Hendrik Keesom, Dutch physicist (Helium I/II), dies at 79
- Mar 5 Erich Itor Kahn, German composer of Jewish descent, dies at 50
- Mar 9 Amanda Aldridge, British opera singer, pianist, teacher, and composer of parlour songs and light orchestral pieces music, dies at 89
- Mar 11 Sergey Nikiforovich Vasilenko, Russian opera composer, dies at 83
- Mar 16 Joseph John Richards, American composer, dies at 77
Fred Allen (1894-1956)
Mar 17 American comedian (Fred Allen Radio Show), dies of a heart attack at 61
Irène Joliot-Curie (1897-1956)
Mar 17 French chemist and physicist (Nobel Prize in Chemistry 1935) and daughter of Marie Curie, dies of leukemia at 58
- Mar 18 Friedrich Panzer, German germanist (Hilde-Gudrun), dies at 85
- Mar 18 Louis Bromfield, American writer (Early Autumn, Pulitzer-1926), dies at 59
- Mar 20 Wilhelm Miklas, Austrian politician and 3rd President of Austria (1928-38), dies at 83
- Mar 22 George Al Sarton, Belgian-American chemist and historian, dies at 71
- Mar 24 Edmund Taylor Whittaker, British mathematician (applied mathematics and the theory of special functions), physicist and historian of science, dies at 82
- Mar 25 George Luther Foote, American composer, dies at 70
- Mar 25 Robert Newton, British actor (Treasure Island, Henry V, Around the World in 80 Days), dies from a heart attack at 50
- Mar 26 Thomas de Hartmann, Russian composer, dies at 70
- Mar 27 Frans Beelaerts van Blokland, minister of Foreign affairs, dies at 84
- Mar 29 Infante Alfonso of Spain, younger brother of King Juan Carlos, dies from an accidental gunshot at 14
- Mar 31 Ralph DePalma, Italian-American auto racer (Indianapolis 500 1915; American AAA National Dirt Track C'ship 1908-11), dies of cancer at 73
Assassination
Car Crash
Hanging
Killed in Action
Plane Crash
Poisoning