- Mar 1 John H. Bankhead, U.S. Senator from Alabama, dies at 77
- Mar 1 Joseph Trumpeldor, Zionist activist, killed defending Tel-Mai against arab attack
- Mar 3 Theodor Philipsen, Danish painter, dies at 79
- Mar 8 Rafael Obligado, Argentine writer (Santos Vega), dies at 69
- Mar 8 Wilhelm Bousset, German theologist and historian, dies at 54
- Mar 11 Julio Garavito Armero, Colombian astronomer (b. 1865)
- Mar 20 Venustiano Carranza, president Mexico (1915-20), murdered at 60
- Mar 21 Federigo Tozzi, Italian writer and journalist (Torre, Tre Croci), dies from pneumonia at 37
- Mar 26 William Chester Minor, American surgeon and contributor to the Oxford English Dictionary (b. 1834)
- Mar 27 Johan G Danser, Dutch poet (Meetings), dies at 26
Assassination
Car Crash
Hanging
Killed in Action
Plane Crash
Poisoning