- Mar 3 Charles Ponzi [Carlo], Italian con-man (Ponzi scheme in the US), born in Lugo, Italy (d. 1949)
- Mar 3 Floris Prims, Flemish priest and historian (archivist of Antwerp), born in Antwerp, Belgium (d. 1954)
- Mar 4 Nicolae Titulescu, Romanian diplomat, government minister, and former President of the League of Nations (d. 1941)
- Mar 6 F. Burrall Hoffman, American architect (d. 1980)
- Mar 6 Geoffrey Mander, English industrialist (Mander Brothers Ltd.), born in Wolverhampton, England (d. 1962)
- Mar 14 Waclaw Sierpinski, Polish mathematician (Sierpinski triangle), born in Warsaw, Kingdom of Poland (d. 1969)
- Mar 19 Gaston Lachaise, American sculptor (Standing Woman), born in Paris, France (d. 1935)
- Mar 20 René Coty, French politician and President of France (1954-59), born in Le Harve, France (d. 1960) [1]
- Mar 23 Emmy Noether, German mathematician (d. 1935)
- Mar 26 Hermann Obrecht, Swiss jurist, member of the Swiss Federal Council, born in Grenchen, Switzerland (d. 1940)
- Mar 30 Melanie Klein, Austrian-British author and child psychoanalyst (object relations theory), born in Vienna, Austria-Hungary (d. 1960)