| 42541 | April 13 | Birth | 1931 – Dan Gurney, American race car driver and engineer |
| 42542 | April 13 | Birth | 1931 – Jon Stone, American composer, producer, and screenwriter (d. 1997) |
| 42543 | April 13 | Birth | 1932 – Orlando Letelier, Chilean-American economist and politician, Chilean Minister of National Defense (d. 1976) |
| 42544 | April 13 | Birth | 1933 – Ben Nighthorse Campbell, American soldier and politician |
| 42545 | April 13 | Birth | 1934 – John Muckler, Canadian ice hockey player, coach, and manager |
| 42546 | April 13 | Birth | 1935 – Lyle Waggoner, American actor |
| 42547 | April 13 | Birth | 1936 – Pierre Rosenberg, French historian and academic |
| 42548 | April 13 | Birth | 1937 – Edward Fox, English actor |
| 42549 | April 13 | Birth | 1937 – Lanford Wilson, American playwright, co-founded the Circle Repertory Company (d. 2011) |
| 42550 | April 13 | Birth | 1938 – Klaus Lehnertz, German pole vaulter |
| 42551 | April 13 | Birth | 1938 – John Weston, English poet and diplomat |
| 42552 | April 13 | Birth | 1939 – Seamus Heaney, Irish poet and playwright, Nobel Prize laureate (d. 2013) |
| 42553 | April 13 | Birth | 1939 – Paul Sorvino, American actor, singer, and director |
| 42554 | April 13 | Birth | 1940 – Mike Beuttler, Egyptian-English race car driver (d. 1988) |
| 42555 | April 13 | Birth | 1940 – Lester Chambers, American singer-songwriter (The Chambers Brothers) |
| 42556 | April 13 | Birth | 1940 – Vladimir Cosma, Romanian composer and conductor |
| 42557 | April 13 | Birth | 1940 – J. M. G. Le Clézio, French author and academic, Nobel Prize laureate |
| 42558 | April 13 | Birth | 1940 – Jim McNab, Scottish footballer (d. 2006) |
| 42559 | April 13 | Birth | 1940 – Max Mosley, English race car driver and engineer, co-founded March Engineering |
| 42560 | April 13 | Birth | 1941 – Michael Stuart Brown, American geneticist and academic, Nobel Prize laureate |
| 42561 | April 13 | Birth | 1941 – Jean-Marc Reiser, French author and illustrator (d. 1983) |
| 42562 | April 13 | Birth | 1941 – Marjorie Yates, English actress |
| 42563 | April 13 | Birth | 1942 – Ataol Behramoğlu Turkish poet and author |
| 42564 | April 13 | Birth | 1942 – Bill Conti, American composer and conductor |
| 42565 | April 13 | Birth | 1943 – Billy Kidd, American skier |
| 42566 | April 13 | Birth | 1943 – Tim Krabbé, Dutch journalist and author |
| 42567 | April 13 | Birth | 1943 – Philip Norman, English journalist, author, and playwright |
| 42568 | April 13 | Birth | 1944 – Franco Arese, Italian runner |
| 42569 | April 13 | Birth | 1944 – Charles Burnett, American actor, director, producer, and screenwriter |
| 42570 | April 13 | Birth | 1944 – Jack Casady, American bass player (Jefferson Airplane, Hot Tuna, and Jefferson Starship) |