| 31081 | March 20 | Birth | 1918 – Donald Featherstone, English soldier and author (d. 2013) |
| 31082 | March 20 | Birth | 1918 – Marian McPartland, English-American pianist and composer (d. 2013) |
| 31083 | March 20 | Birth | 1920 – Pamela Harriman, English-American diplomat, 58th United States Ambassador to France (d. 1997) |
| 31084 | March 20 | Birth | 1920 – Vickie Panos, Canadian baseball player |
| 31085 | March 20 | Birth | 1920 – Rosemary Timperley, English author and screenwriter (d. 1988) |
| 31086 | March 20 | Birth | 1921 – Dušan Pirjevec, Slovenian historian and philosopher (d. 1977) |
| 31087 | March 20 | Birth | 1921 – Alfréd Rényi, Hungarian mathematician and theorist (d. 1970) |
| 31088 | March 20 | Birth | 1922 – Larry Elgart, American saxophonist and bandleader |
| 31089 | March 20 | Birth | 1922 – Ray Goulding, American actor and screenwriter (d. 1990) |
| 31090 | March 20 | Birth | 1922 – Carl Reiner, American actor, director, producer, and screenwriter |
| 31091 | March 20 | Birth | 1923 – Con Martin, Irish footballer and manager (d. 2013) |
| 31092 | March 20 | Birth | 1923 – Shaukat Siddiqui, Pakistani journalist, author, and activist (d. 2006) |
| 31093 | March 20 | Birth | 1924 – Jozef Kroner, Slovak actor (d. 1998) |
| 31094 | March 20 | Birth | 1925 – John Ehrlichman, American lawyer, 12th White House Counsel (d. 1999) |
| 31095 | March 20 | Birth | 1925 – Eugene Louis Faccuito, American dancer and choreographer (d. 2015) |
| 31096 | March 20 | Birth | 1927 – John Joubert, South African-English composer and academic |
| 31097 | March 20 | Birth | 1928 – Jerome Biffle, American long jumper and coach (d. 2002) |
| 31098 | March 20 | Birth | 1928 – James P. Gordon, American physicist and engineer (d. 2013) |
| 31099 | March 20 | Birth | 1928 – Fred Rogers, American television host and producer (d. 2003) |
| 31100 | March 20 | Birth | 1929 – William Andrew MacKay, Canadian lawyer and judge (d. 2013) |
| 31101 | March 20 | Birth | 1929 – Germán Robles, Spanish-Mexican actor and director |
| 31102 | March 20 | Birth | 1930 – S. Arasaratnam, Sri Lankan historian, author, and academic (d. 1998) |
| 31103 | March 20 | Birth | 1931 – Hal Linden, American actor, singer, and director |
| 31104 | March 20 | Birth | 1931 – Rein Raamat, Estonian director and screenwriter |
| 31105 | March 20 | Birth | 1933 – Lateef Adegbite, Nigerian lawyer and politician (d. 2012) |
| 31106 | March 20 | Birth | 1933 – George Altman, American baseball player |
| 31107 | March 20 | Birth | 1933 – Alexander Gorodnitsky, Russian geologist and poet |
| 31108 | March 20 | Birth | 1933 – Renato Salvatori, Italian actor (d. 1988) |
| 31109 | March 20 | Birth | 1933 – Ian Walsh, Australian rugby player and coach (d. 2013) |
| 31110 | March 20 | Birth | 1934 – Willie Brown, American soldier, lawyer, and politician, 41st Mayor of San Francisco |