| 42061 | April 12 | Birth | 1907 – Hardie Gramatky, American author and painter (d. 1979) |
| 42062 | April 12 | Birth | 1908 – Ida Pollock, English author and painter (d. 2013) |
| 42063 | April 12 | Birth | 1908 – Robert Lee Scott, Jr., American pilot and general (d. 2006) |
| 42064 | April 12 | Birth | 1911 – Mahmoud Younis, Egyptian engineer (d. 1976) |
| 42065 | April 12 | Birth | 1912 – Frank Dilio, Canadian businessman (d. 1997) |
| 42066 | April 12 | Birth | 1912 – Walt Gorney, American actor (d. 2004) |
| 42067 | April 12 | Birth | 1912 – Hamengkubuwono IX, Indonesian politician, 2nd Vice President of Indonesia (d. 1988) |
| 42068 | April 12 | Birth | 1912 – Hound Dog Taylor, American singer-songwriter and guitarist (d. 1975) |
| 42069 | April 12 | Birth | 1913 – Keiko Fukuda, Japanese-American martial artist (d. 2013) |
| 42070 | April 12 | Birth | 1914 – Armen Alchian, American economist and academic (d. 2013) |
| 42071 | April 12 | Birth | 1916 – Movita Castaneda, American actress and singer (d. 2015) |
| 42072 | April 12 | Birth | 1916 – Beverly Cleary, American author and librarian |
| 42073 | April 12 | Birth | 1916 – Russell Garcia, American-New Zealand composer and conductor (d. 2011) |
| 42074 | April 12 | Birth | 1916 – Benjamin Libet, American neuropsychologist and academic (d. 2007) |
| 42075 | April 12 | Birth | 1917 – Helen Forrest, American singer and actress (d. 1999) |
| 42076 | April 12 | Birth | 1917 – Robert Manzon, French racing driver (d. 2015) |
| 42077 | April 12 | Birth | 1919 – István Anhalt, Hungarian-Canadian composer and educator (d. 2012) |
| 42078 | April 12 | Birth | 1919 – Billy Vaughn, American singer and bandleader (d. 1991) |
| 42079 | April 12 | Birth | 1921 – Robert Cliche, Canadian lawyer, judge, and politician (d. 1978) |
| 42080 | April 12 | Birth | 1922 – Simon Kapwepwe, Zambian politician, 2nd Vice President of Zambia (d. 1980) |
| 42081 | April 12 | Birth | 1923 – Ann Miller, American actress, singer, and dancer (d. 2004) |
| 42082 | April 12 | Birth | 1924 – Raymond Barre, French economist and politician, Prime Minister of France (d. 2007) |
| 42083 | April 12 | Birth | 1924 – Peter Safar, Austrian physician and academic (d. 2003) |
| 42084 | April 12 | Birth | 1925 – Evelyn Berezin, American computer scientist and engineer |
| 42085 | April 12 | Birth | 1925 – Joe Bowman, American target shooter and boot maker (d. 2009) |
| 42086 | April 12 | Birth | 1925 – Ned Miller, American singer-songwriter |
| 42087 | April 12 | Birth | 1925 – Oliver Postgate, English animator, puppeteer, and screenwriter (d. 2008) |
| 42088 | April 12 | Birth | 1927 – Thomas Hemsley, English actor and singer (d. 2013) |
| 42089 | April 12 | Birth | 1928 – Hardy Krüger, German actor and producer |
| 42090 | April 12 | Birth | 1928 – Jean-François Paillard, French conductor and author (d. 2013) |