| 40861 | April 9 | Birth | 1933 – Fern Michaels, American author |
| 40862 | April 9 | Birth | 1933 – Richard Rose, American political scientist and academic |
| 40863 | April 9 | Birth | 1934 – Bill Birch, New Zealand surveyor and politician, 38th New Zealand Minister of Finance |
| 40864 | April 9 | Birth | 1934 – Tom Phillis, Australian motorcycle racer (d. 1962) |
| 40865 | April 9 | Birth | 1934 – Mariya Pisareva, Russian high jumper |
| 40866 | April 9 | Birth | 1935 – Aulis Sallinen, Finnish composer and academic |
| 40867 | April 9 | Birth | 1935 – Avery Schreiber, American actor (d. 2002) |
| 40868 | April 9 | Birth | 1936 – Jerzy Maksymiuk, Polish pianist, composer, and conductor |
| 40869 | April 9 | Birth | 1936 – Valerie Solanas, American radical feminist author, attempted murderer (d. 1988) |
| 40870 | April 9 | Birth | 1937 – Simon Brown, Baron Brown of Eaton-under-Heywood, English lieutenant, lawyer, and judge |
| 40871 | April 9 | Birth | 1937 – Marty Krofft, Canadian screenwriter and producer |
| 40872 | April 9 | Birth | 1937 – Valerie Singleton, English television and radio host |
| 40873 | April 9 | Birth | 1938 – Viktor Chernomyrdin, Russian businessman and politician, 30th Prime Minister of Russia (d. 2010) |
| 40874 | April 9 | Birth | 1938 – Rockin' Sidney, American singer (d. 1998) |
| 40875 | April 9 | Birth | 1939 – Michael Learned, American actress and singer |
| 40876 | April 9 | Birth | 1940 – Hans-Joachim Reske, German sprinter |
| 40877 | April 9 | Birth | 1940 – Jim Roberts, Canadian-American ice hockey player and coach (d. 2015) |
| 40878 | April 9 | Birth | 1941 – Kay Adams, American singer-songwriter |
| 40879 | April 9 | Birth | 1941 – Hannah Gordon, Scottish actress |
| 40880 | April 9 | Birth | 1941 – Chu Song-woong, South Korean actor (d. 1985) |
| 40881 | April 9 | Birth | 1942 – Brandon deWilde, American actor and singer (d. 1972) |
| 40882 | April 9 | Birth | 1942 – Margo Smith, American singer-songwriter |
| 40883 | April 9 | Birth | 1943 – Terry Knight, American singer-songwriter and producer (Terry Knight and the Pack) (d. 2004) |
| 40884 | April 9 | Birth | 1944 – Joe Brinkman, American baseball player and umpire |
| 40885 | April 9 | Birth | 1944 – Heinz-Joachim Rothenburg, German shot putter |
| 40886 | April 9 | Birth | 1945 – Steve Gadd, American drummer (Stuff, Steps Ahead, and Sunlightsquare) |
| 40887 | April 9 | Birth | 1945 – Peter Gammons, American journalist |
| 40888 | April 9 | Birth | 1946 – Nate Colbert, American baseball player |
| 40889 | April 9 | Birth | 1946 – Mike Hancock, English politician |
| 40890 | April 9 | Birth | 1946 – Alan Knott, English cricketer |