- Mar 1 Royal H. Weller, American politician (Member of the U.S. House of Representatives from New York), dies at 47
- Mar 5 David Dunbar Buick, Scottish-American automobile pioneer (Buick Motor Company), dies at 74
- Mar 12 Asa Griggs Candler, American businessman (developed Coca-Cola into a company), dies at 77
- Mar 15 Clarence "Pinetop" Smith, American jazz pianist and singer (Boogie Woogie Piano), dies of a gunshot wound in a dance-hall fight at 24
- Mar 20 Ferdinand Foch, French Allied military commander and marshal of France during WW I, dies at 77
- Mar 22 Anton Beer-Walbrun, German composer, dies at 64
- Mar 26 Katharine Lee Bates, American poet (b. 1859)
- Mar 27 Samuil Shatunovsky, Ukrainian mathematician, dies at 70
- Mar 28 Lomer Gouin, Quebec politician (b. 1861)
- Mar 31 Burner Matthews, American academic and critic who established study of theatre (NY Times), dies at 77
Assassination
Car Crash
Hanging
Killed in Action
Plane Crash
Poisoning