Glenn Miller (1904-1944)
Mar 1 American bandleader and jazz composer (Glenn Miller Orchestra - "In The Mood"; "Moonlight Srenade"; "String Of Pearls"), born in Clarinda, Iowa
- Mar 1 Paul Hartman, American actor (Petticoat Junction, Inherit the Wind), born in San Francisco, California (d. 1973)
Dr. Seuss (1904-1991)
Mar 2 American children's author (The Cat in the Hat, Green Eggs and Ham), born in Springfield, Massachusetts
- Mar 4 Chief Tahachee [Jeff Davis Tahchee Cypert], Cherokee stage and film actor, born in James Mill, Arkansas (d. 1978)
- Mar 4 George Gamow, Ukrainian-born American nuclear physicist and writer (Big Bang Theory, DNA), born in Odessa, Russian Empire (d. 1968)
- Mar 4 Joseph Schmidt, Austrian-Hungarian tenor and actor (Der Liebesexpreß; A Star Fell from Heaven), born in Storozhynets, Austria-Hungary (d. 1942)
- Mar 5 Karl Rahner, German theologian (d. 1984)
- Mar 6 Chris Baay, Dutch actor (Tomorrow It Will Be Better, Klatergoud, Surprise Raid), born in Amsterdam, Noord-Holland, Netherlands (d. 1991)
- Mar 6 Hugh Williams, British dramatist, actor and writer (Wuthering Heights, Bank Holiday), born in East Sussex, England (d. 1969)
- Mar 6 José Antonio Aguirre, Basque politician (d. 1960)
- Mar 7 Ivar Ballangrud, Norwegian speed skater (Olympic gold 5,000m 1928; 500m, 5,000m 10,000m 1936), born in Lunner, Norway (d. 1969)
Reinhard Heydrich (1904-1942)
Mar 7 German Nazi leader (head of Bohemia and Moravia and the Reich Main Security Office), born in Halle an der Saale
- Mar 7 Virginia Downing, American actress (The Gig, Butterfield 8), born in Washington, District of Columbia (d. 1996)
- Mar 9 Paul Klipsch, American engineer, noted for his loudspeaker designs, born in Elkhart, Indiana (d. 2002)
- Mar 11 Cornelis Jan Bakker, Dutch nuclear physicist (Director of CERN), born in Amsterdam, Netherlands (d. 1960)
- Mar 12 Ken James, New Zealand cricket wicket-keeper (11 Tests, 16 dismissals; Wellington, Northamptonshire CCC), born in Wellington, New Zealand (d. 1976)
- Mar 13 Henry Iliffe Cozens, English Royal Air Force pilot, born in London (d. 1995)
- Mar 14 Doris Eaton, American actress (Man on the Moon, Tell Your Children), born in Norfolk, Virginia (d. 2010)
- Mar 14 Voltaire "Volly" De Faut; American jazz reed player (New Orleans Rhythm Kings; Jean Goldkette), born in Little Rock, Arkansas (d. 1973)
- Mar 15 George Brent, American actor (42nd St, Jezebel), born in Dublin, Ireland (d. 1979)
- Mar 15 J Pat O'Malley, Irish-British actor (101 Dalmatians, The Jungle Book), born in Burnley, England (d. 1985)
- Mar 16 Clive Morton, British actor (Goodbye Mr Chips, Moonraker), born in London, England (d. 1975)
- Mar 17 Patrick Hamilton, English author and playwright (Gaslight, Rope), born in Hassocks, England (d. 1962)
- Mar 18 Srečko Kosovel, Slovenian poet (d. 1926)
John Sirica (1904-1992)
Mar 19 American federal judge (Watergate hearings), born in Waterbury, Connecticut
- Mar 19 Tadeusz Zygfryd Kassern, Polish composer and cultural attache, born in Lviv, Poland (d. 1957)
- Mar 20 B F Skinner, American psychologist (Skinner Box), born in Susquehanna, Pennsylvania (d. 1990)
- Mar 21 Forrest Mars Sr., American candymaker (d. 1999)
- Mar 21 Nikolaos Skalkottas, Greek composer, born in Chalcis, Greece (d. 1949)
- Mar 24 Martin Kosleck, German actor (Pursuit to Algiers; Agent for H.A.R.M.), born in Barkotzen, Pomerania, Germany (d. 1994)
- Mar 26 Emilio Fernandez, Mexican director (La Choca, Flor Silvestre), born in El Seco Mexico (d. 1986)
- Mar 26 Hermann Schroeder, German composer, born in Bernkastel, Germany (d. 1984)
- Mar 26 Joseph Campbell, American professor of comparative mythology (Mythic Image), born in White Plains, New York (d. 1987)
- Mar 26 Xenophon Zolotas, Greek economist, Prime Minister of Greece (d. 2004)
- Mar 27 Hal Kemp American jazz alto saxophonist, clarinetist, arranger and sweet jazz bandleader, born in Marion, Alabama (d. 1940)
- Mar 30 Akarova [Marguerite Acarin], Belgian dancer and choreographer (Les Biches)in Saint-Josse-ten-Noode, Belgium (d. 1999)
- Mar 30 Ripper Collins, American baseball first baseman (MLB All-Star 1935, 36, 37; World Series 1931, 34; NL HR leader 1934; St Louis Cardinals), born in Altoona, Pennsylvania (d. 1970)
About March 1904
How Old? 119 years old
Generation: Greatest Generation
Leap Year: Yes