| 27661 | March 12 | Birth | 1923 – Wally Schirra, American captain, pilot, and astronaut (d. 2007) |
| 27662 | March 12 | Birth | 1923 – Joseph F. Weis, Jr., American lawyer and judge (d. 2014) |
| 27663 | March 12 | Birth | 1923 – Mae Young, American wrestler (d. 2014) |
| 27664 | March 12 | Birth | 1924 – Henri Rochon, Canadian tennis player (d. 2005) |
| 27665 | March 12 | Birth | 1924 – Mary Lee Woods, English mathematician and computer programmer |
| 27666 | March 12 | Birth | 1925 – Louison Bobet, French cyclist (d. 1983) |
| 27667 | March 12 | Birth | 1925 – Georges Delerue, French composer (d. 1992) |
| 27668 | March 12 | Birth | 1925 – Leo Esaki, Japanese physicist and academic, Nobel Prize laureate |
| 27669 | March 12 | Birth | 1925 – Harry Harrison, American author and illustrator (d. 2012) |
| 27670 | March 12 | Birth | 1926 – George Ariyoshi, American lawyer and politician, 3rd Governor of Hawaii |
| 27671 | March 12 | Birth | 1926 – Freddie Williams, Welsh motorcycle racer (d. 2013) |
| 27672 | March 12 | Birth | 1927 – Raúl Alfonsín, Argentinian lawyer and politician, 46th President of Argentina (d. 2009) |
| 27673 | March 12 | Birth | 1928 – Edward Albee, American director and playwright |
| 27674 | March 12 | Birth | 1928 – Aldemaro Romero, Venezuelan pianist, composer, and conductor (d. 2007) |
| 27675 | March 12 | Birth | 1930 – Bronco Horvath, Canadian ice hockey player and coach |
| 27676 | March 12 | Birth | 1930 – Vern Law, American baseball player, coach, and manager |
| 27677 | March 12 | Birth | 1930 – Win Tin, Burmese journalist and politician, co-founded the National League for Democracy (d. 2014) |
| 27678 | March 12 | Birth | 1931 – Herb Kelleher, American businessman, co-founded Southwest Airlines |
| 27679 | March 12 | Birth | 1931 – Robert B. Oakley, American soldier and diplomat, 19th United States Ambassador to Pakistan (d. 2014) |
| 27680 | March 12 | Birth | 1931 – Billie Thomas, American actor (d. 1980) |
| 27681 | March 12 | Birth | 1932 – Andrew Young, American pastor and politician, 14th United States Ambassador to the United Nations |
| 27682 | March 12 | Birth | 1933 – Barbara Feldon, American actress |
| 27683 | March 12 | Birth | 1934 – Virginia Hamilton, American author (d. 2002) |
| 27684 | March 12 | Birth | 1934 – David Spenser, Sri Lankan-English actor and director (d. 2013) |
| 27685 | March 12 | Birth | 1935 – John Doherty, English footballer (d. 2007) |
| 27686 | March 12 | Birth | 1935 – Valentyna Shevchenko, Ukrainian politician |
| 27687 | March 12 | Birth | 1936 – Lloyd Dobyns, American journalist and author |
| 27688 | March 12 | Birth | 1936 – Patrick Procktor, Irish-English painter and academic (d. 2003) |
| 27689 | March 12 | Birth | 1936 – Eddie Sutton, American basketball player and coach |
| 27690 | March 12 | Birth | 1937 – Valentīna Eiduka, Latvian javelin thrower and coach |