- Mar 2 Gustav Wohlgemuth, German composer, dies at 73
- Mar 6 Frank Vosper, British actor (The Man Who Knew Too Much, Rome Express), dies at sea at 37
- Mar 8 Albert Verwey, Dutch poet/literature historian (Motion), dies at 71
Howie Morenz
Mar 8 Howie Morenz, Canadian Hockey Hall of Fame center (Montreal Canadiens, 3-time Stanley Cup winner), dies of a heart attack at 34
Howie Morenz
- Mar 9 Paul Elmer More, American critic and essayist, dies at 72
- Mar 10 Yevgeny Zamyatin, Russian writer (b. 1884)
- Mar 11 Paul Scheinpflug, composer, dies at 61
- Mar 11 Joseph S. Cullinan, American oil industrialist (b. 1860)
- Mar 12 Jenő Hubay [Huber], Hungarian violinist, composer, and educator (Budapest Conservatory, 1886-1934), dies at 78
- Mar 12 Charles-Marie Widor, French organist (Saint-Sulpice, 1870-1933), composer (10 organ symphonies), and professor (American Conservatory at Fontainebleau, 1921-34), dies at 93
- Mar 15 H. P. Lovecraft, American horror writer (At the Mountains of Madness, Weird Tales), dies at 46
- Mar 16 J Austen Chamberlain, English Minister of Foreign Affairs (Nobel), dies at 73
- Mar 18 Charles Haslewood Shannon, English lithographer and painter, dies at 73
- Mar 19 Horacio Quiroga, Uruguayan playwright, poet, and short story writer (Anaconda, El Crimen del Otro), commits suicide at 58
Harry Vardon
Mar 20 Harry Vardon, Jersey golfer (6 time British Open champion, US Open 1900), dies of lung cancer at 66
Harry Vardon
- Mar 22 Mary Russell, Duchess of Bedford, English aviator and ornithologist, dies at 71
- Mar 23 Helge Rode, Danish poet/essayist, dies at 66
- Mar 25 John Drinkwater, English poet and playwright (Bird in Hand), dies at 54
- Mar 26 Albert Relf, English cricketer (13 Tests for England 1903-14), commits suicide at 52
- Mar 29 Karol Maciej Szymanowski, Polish pianist and composer (Symphony No. 3 - Song Of The Night), dies of tuberculosis at 54