- Mar 2 Stanisław Taczak, Polish general, commander-in-chief of the Greater Poland Uprising, dies at 85
- Mar 3 Sammy White, American comedian and actor (711 Ocean Drive, Sound Off), dies at 65
- Mar 4 Herbert O'Conor, American politician, 51st Governor of Maryland (b. 1896)
- Mar 4 Leonard Warren [Warenoff], American baritone (Metropolitan Opera, 1939-60), dies of a heart attack during a performance of Verddi's "La forza del destino" at 48
- Mar 9 Jack Beattie, Northern Irish politician (b. 1886)
- Mar 11 Roy Chapman Andrews, US scientist and explorer (found 1st known dinosaur eggs, director of the American Museum of Natural History), dies at 76
- Mar 22 Agnes Arber, English biologist and philosopher (Mind & the Eye, 1st woman botanist elected to the Royal Society), dies at 81
- Mar 22 José Antonio Aguirre, Basque politician (b. 1904)
- Mar 23 Franklin P. Adams, American columnist (Information Please), dies at 78
- Mar 24 Paul Joostens, Belgian avant-garde artist, dies at 70
- Mar 26 Ian Keith, American actor (Abraham Lincoln, Queen Christina, Cleopatra, 3 Musketeers), dies from a heart attack at 61
- Mar 27 Ian Whyte, Scottish composer and conductor (BBC Scottish Orchestra), dies at 58
- Mar 30 Fritz Klimsch, German sculptor and painter, dies at 90
- Mar 30 Joseph Haas, German late romantic opera composer (Tobias Wunderlich; Totenmesse), dies at 81
Assassination
Car Crash
Hanging
Killed in Action
Plane Crash
Poisoning