- Mar 3 Constant W L Scheurleer, archaeologist/banker/art expert, dies at 59
- Mar 3 Ernst Cahn, owner of Amsterdam Koco ice cream parlor, executed
- Mar 4 Edoardo Mascheroni, Italian composer, dies at 81
- Mar 5 Ludwig Quidde, German historian/politician (Nobel 1927), dies at 82
- Mar 6 John Gutzon Borglum, American sculptor (Mount Rushmore), dies at 73
- Mar 6 Leen Schijvenschuurder, Dutch February strike leader, executed
- Mar 7 Arnold Schering, German musicologist (Humor, Heldentum, Tragik), dies at 63
- Mar 7 Gunther Prien, German commandant (U-47), dies in battle
- Mar 7 Julian Eltinge [Dalton], American vaudeville, Broadway, and silent film female impersonator star (The Crinoline Girl), dies of a suspected cerebral hemorrhage at 59
- Mar 8 José Serrano Simeón, Spanish composer, dies at 67
- Mar 8 Sherwood Anderson, American author & publisher (Winesburg Ohio), dies at 64
- Mar 9 Carlos Pedrell, Uruguayan guitarist and composer, dies at 62
- Mar 11 Walford Davies, British organist, composer, educator, and broadcaster (BBC), dies at 71
- Mar 12 Charles Sanford Skilton, composer, dies at 72
- Mar 13 A Coenradi, Dutch resistance fighter, executed
- Mar 13 Bernard Ijzerdraat, Dutch resistance fighter, executed by Nazi regime at 49
- Mar 13 E Hellendoorn, Dutch resistance fighter, executed
- Mar 13 J Eyl, Dutch resistance fighter, executed
- Mar 13 Elizabeth Madox Roberts, American poet and novelist (The Time of Man), dies at 54
- Mar 15 Alexej von Jawlensky, Russian painter, dies at 77
- Mar 16 John Murray, Canada oceanographer (Challenger), dies at 73
- Mar 17 Joachim Schepke, German commandant (U-100), dies in battle
- Mar 17 Marguerite Nichols, American actress (b. 1895)
- Mar 20 D A van den Bosch, anti-nazi clergyman (Amersfoort Camp), dies
- Mar 21 Robert Liefmann, German economist (Kartelle und Trusts), dies at 67
- Mar 24 (Rafaël) "Raf" Verhulst, Flemish poet, journalist, playwright (Jesus of Nazarus; Semini's Children), and educator, dies at 75
Virginia Woolf
Mar 28 Virginia Woolf-Stephen [Adeline], British writer (To Lighthouse), dies from suicide at 59
- Mar 28 Kavasji Jamshedji Petigara, Indian Police Commissioner (b. 1877)