- Mar 1 Roscoe Ates, American actor (Freaks, Cimarron, Marshal of Gunsight Pass), dies of lung cancer at 67
- Mar 2 Charles Jean de la Vallée-Poussin, Belgian mathematician (Prime number theorem), dies at 95
- Mar 2 Walt Kiesling, American Pro Football Hall of Fame guard (NFL 1920s All-Decade Team; First-team All-Pro 1929, 30, 32; Chicago Cardinals) and coach (Pittsburgh Pirates/Steelers), dies from bacteremia at 58
- Mar 3 Cairine Ray Wilson, Canadian politician and diplomat (1st woman appointed to Canadian senate 1930), dies at 77 [1]
- Mar 4 Cairine R. Wilson, 1st Canadian female senator (appointed), dies at 77
- Mar 4 George Mogridge, American baseball pitcher (World Series 1924 Washington Senators; no-hitter 1917 NY Yankees), dies at 73
- Mar 5 Anne Cornelis Veth, Dutch cartoonist and art critic, dies at 82
- Mar 5 Otakar Jeremias, composer, dies at 69
- Mar 6 Rezső Kókai, Hungarian pianist, composer, musicologist, and pedagogue, dies at 56
- Mar 8 Howard Engstrom, American computer designer (co-creator Univac computer), dies at 59
- Mar 9 Howard Engstrom, Boston, a designer of Univac computer, dies at 59
- Mar 11 Will Vesper, German author (Tristan und Isolde), dies at 79
- Mar 15 Sam Wren, American actor (Marked Woman, The Old Grey Mayor), dies at 65
- Mar 16 John Owen Jones, Welsh organist, violist, and composer, dies at 85
- Mar 17 Frank Orth, American actor (Boston Blackie, Brothers), dies at 82
- Mar 17 Wilhelm Blaschke, Austrian integral geometer, dies at 76
A. E. Douglass (1867-1962)
Mar 20 American astronomer and inventor of dendrochronology (tree-ring dating), dies at 94
- Mar 20 C. Wright Mills, American sociologist and writer (The Power Elite), dies at 45
- Mar 22 Aura Abranches, Portuguese actress (Lisboa; O Primo Basilio), dies at 65
- Mar 23 Josef van Schaik, Dutch lawyer and politician (Vice-Premier of Netherands), dies at 80
- Mar 23 Val Paul, American actor and director (Suspense, The Phantom Thief), dies at 75
- Mar 24 (John) Jean Goldkette, French jazz pianist and bandleader, dies of a heart attack at 69
- Mar 25 Auguste Piccard, Swiss scientist, explorer and balloonist (1st flight into stratosphere, by balloon), dies at 78
- Mar 26 Augusta Savage (née Fells), African-American sculptor and equal rights advocate, dies of cancer at 72 [1]
- Mar 26 Marjorie Colton, American inventor of wax paper, dies at 64
- Mar 28 Hugo Wast, Argentine writer (b. 1883)
- Mar 30 Jack Purvis, American jazz trumpet player and composer, dies at 55
Assassination
Car Crash
Hanging
Killed in Action
Plane Crash
Poisoning