| 40801 | April 9 | Birth | 1867 – Chris Watson, Chilean-Australian journalist and politician, 3rd Prime Minister of Australia (d. 1941) |
| 40802 | April 9 | Birth | 1867 – Charles Winckler, Danish tug of war competitor, discus thrower, and shot putter (d. 1932) |
| 40803 | April 9 | Birth | 1872 – Léon Blum, French lawyer and politician, Prime Minister of France (d. 1950) |
| 40804 | April 9 | Birth | 1875 – Jacques Futrelle, American journalist and author (d. 1912) |
| 40805 | April 9 | Birth | 1880 – Jan Letzel, Czech architect (d. 1925) |
| 40806 | April 9 | Birth | 1882 – Frederick Francis IV, Grand Duke of Mecklenburg-Schwerin (d. 1946) |
| 40807 | April 9 | Birth | 1883 – Frank King, American cartoonist (d. 1969) |
| 40808 | April 9 | Birth | 1887 – Konrad Tom, Polish actor, writer, singer, and director (d. 1957) |
| 40809 | April 9 | Birth | 1888 – Sol Hurok, Ukrainian-American talent manager (d. 1974) |
| 40810 | April 9 | Birth | 1893 – Charles E. Burchfield, American painter (d.1967) |
| 40811 | April 9 | Birth | 1893 – Victor Gollancz, English publisher, founded Victor Gollancz Ltd (d. 1967) |
| 40812 | April 9 | Birth | 1893 – Rahul Sankrityayan, Indian linguist, author, and scholar (d. 1963) |
| 40813 | April 9 | Birth | 1895 – Mance Lipscomb, American singer-songwriter and guitarist (d. 1976) |
| 40814 | April 9 | Birth | 1895 – Michel Simon, Swiss-French actor and singer (d. 1975) |
| 40815 | April 9 | Birth | 1897 – John B. Gambling, American radio host (d. 1974) |
| 40816 | April 9 | Birth | 1898 – Curly Lambeau, American football player and coach (d. 1965) |
| 40817 | April 9 | Birth | 1898 – Paul Robeson, American singer, actor, and activist (d. 1976) |
| 40818 | April 9 | Birth | 1900 – Allen Jenkins, American actor and singer (d. 1974) |
| 40819 | April 9 | Birth | 1901 – Jean Bruchési, Canadian historian and author (d. 1979) |
| 40820 | April 9 | Birth | 1901 – Paul Willis, American actor and director (d. 1960) |
| 40821 | April 9 | Birth | 1902 – Théodore Monod, French explorer and scholar (d. 2000) |
| 40822 | April 9 | Birth | 1903 – Ward Bond, American actor (d. 1960) |
| 40823 | April 9 | Birth | 1904 – Sharkey Bonano, American singer, trumpet player, and bandleader (d. 1972) |
| 40824 | April 9 | Birth | 1905 – J. William Fulbright, American lawyer and politician (d. 1995) |
| 40825 | April 9 | Birth | 1906 – Rafaela Aparicio, Spanish actress (d. 1996) |
| 40826 | April 9 | Birth | 1906 – Antal Doráti, Hungarian-American conductor and composer (d. 1988) |
| 40827 | April 9 | Birth | 1908 – Joseph Krumgold, American author and screenwriter (d. 1980) |
| 40828 | April 9 | Birth | 1908 – Victor Vasarely, Hungarian-French painter (d. 1997) |
| 40829 | April 9 | Birth | 1910 – Abraham A. Ribicoff, American lawyer and politician, 4th United States Secretary of Health and Human Services (d. 1998) |
| 40830 | April 9 | Birth | 1912 – Lev Kopelev, Ukrainian-German author and academic (d. 1997) |