| 49561 | April 30 | Birth | 1623 – François de Laval, French-Canadian bishop and saint (d. 1708) |
| 49562 | April 30 | Birth | 1651 – Jean-Baptiste de La Salle, French priest and saint (d. 1719) |
| 49563 | April 30 | Birth | 1662 – Mary II of England (d. 1694) |
| 49564 | April 30 | Birth | 1664 – François Louis, Prince of Conti (d. 1709) |
| 49565 | April 30 | Birth | 1710 – Johann Kaspar Basselet von La Rosée, Bavarian general (d. 1795) |
| 49566 | April 30 | Birth | 1723 – Mathurin Jacques Brisson, French zoologist and philosopher (d. 1806) |
| 49567 | April 30 | Birth | 1758 – Emmanuel Vitale, Maltese commander and politician (d. 1802) |
| 49568 | April 30 | Birth | 1770 – David Thompson, English-Canadian cartographer and explorer (d. 1857) |
| 49569 | April 30 | Birth | 1777 – Carl Friedrich Gauss, German mathematician and physicist (d. 1855) |
| 49570 | April 30 | Birth | 1803 – Albrecht von Roon, Prussian soldier and politician, 10th Minister President of Prussia (d. 1879) |
| 49571 | April 30 | Birth | 1812 – Kaspar Hauser, German feral child (d. 1833) |
| 49572 | April 30 | Birth | 1829 – Ferdinand von Hochstetter, Austrian geologist and academic (d. 1884) |
| 49573 | April 30 | Birth | 1850 – George Gibb, Scottish-English businessman (d. 1925) |
| 49574 | April 30 | Birth | 1857 – Eugen Bleuler, Swiss psychiatrist and eugenicist (d. 1940) |
| 49575 | April 30 | Birth | 1857 – Walter Simon, German banker and philanthropist (d. 1920) |
| 49576 | April 30 | Birth | 1864 – Jean, duc Decazes, French sailor (d. 1912) |
| 49577 | April 30 | Birth | 1864 – Juhan Liiv, Estonian poet and author (d. 1913) |
| 49578 | April 30 | Birth | 1865 – Max Nettlau, German historian and academic (d. 1944) |
| 49579 | April 30 | Birth | 1869 – Hans Poelzig, German architect, designed the IG Farben Building and Großes Schauspielhaus (d. 1936) |
| 49580 | April 30 | Birth | 1870 – Franz Lehár, Slovak-Austrian composer (d. 1948) |
| 49581 | April 30 | Birth | 1870 – Dadasaheb Phalke, Indian director, producer, and screenwriter (d. 1944) |
| 49582 | April 30 | Birth | 1874 – Cyriel Verschaeve, Flemish priest and author (d. 1949) |
| 49583 | April 30 | Birth | 1876 – Orso Mario Corbino, Italian physicist and politician (d. 1937) |
| 49584 | April 30 | Birth | 1877 – Léon Flameng, French cyclist (d. 1917) |
| 49585 | April 30 | Birth | 1877 – Alice B. Toklas, American-French author (d. 1967) |
| 49586 | April 30 | Birth | 1880 – Charles Exeter Devereux Crombie, Scottish cartoonist (d. 1967) |
| 49587 | April 30 | Birth | 1883 – Jaroslav Hašek, Czech soldier and author (d. 1923) |
| 49588 | April 30 | Birth | 1883 – Luigi Russolo, Italian painter and composer (d. 1947) |
| 49589 | April 30 | Birth | 1884 – Olof Sandborg, Swedish actor (d. 1965) |
| 49590 | April 30 | Birth | 1888 – John Crowe Ransom, American poet, critic, and academic (d. 1974) |