| 105421 | September 15 | Birth | 1759 – Cornelio Saavedra, Argentinean general and politician (d. 1829) |
| 105422 | September 15 | Birth | 1760 – Bogislav Friedrich Emanuel von Tauentzien, Prussian general (d. 1824) |
| 105423 | September 15 | Birth | 1765 – Manuel Maria Barbosa du Bocage, Portuguese poet and author (d. 1805) |
| 105424 | September 15 | Birth | 1789 – James Fenimore Cooper, American historian and author (d. 1851) |
| 105425 | September 15 | Birth | 1815 – Halfdan Kjerulf, Norwegian journalist and composer (d. 1868) |
| 105426 | September 15 | Birth | 1819 – Cyprien Tanguay, Canadian priest and historian (d. 1902) |
| 105427 | September 15 | Birth | 1828 – Alexander Butlerov, Russian chemist and academic (d. 1886) |
| 105428 | September 15 | Birth | 1830 – Porfirio Díaz, Mexican general and politician, 29th President of Mexico (d. 1915) |
| 105429 | September 15 | Birth | 1857 – William Howard Taft, American lawyer, jurist, and politician, 27th President of the United States (d. 1930) |
| 105430 | September 15 | Birth | 1857 – Anna Winlock, American astronomer and academic (d. 1904) |
| 105431 | September 15 | Birth | 1858 – Charles de Foucauld, French priest and martyr (d. 1916) |
| 105432 | September 15 | Birth | 1858 – Jenő Hubay, Hungarian violinist, composer, and educator (d. 1937) |
| 105433 | September 15 | Birth | 1860 – M. Visvesvaraya, Indian engineer, scholar, and Bharat Ratna Laureate, Diwan of the Mysore Kingdom (d. 1962) |
| 105434 | September 15 | Birth | 1863 – Horatio Parker, American organist, composer, and educator (d. 1919) |
| 105435 | September 15 | Birth | 1864 – Prince Sigismund of Prussia (d. 1866) |
| 105436 | September 15 | Birth | 1867 – Vladimir May-Mayevsky, Russian general (d. 1920) |
| 105437 | September 15 | Birth | 1876 – Sarat Chandra Chattopadhyay, Indian author (d. 1938) |
| 105438 | September 15 | Birth | 1876 – Bruno Walter, German-American pianist, composer, and conductor (d. 1962) |
| 105439 | September 15 | Birth | 1877 – Jakob Ehrlich, Czech-Austrian politician (d. 1938) |
| 105440 | September 15 | Birth | 1877 – Yente Serdatzky, Lithuanian-American author and playwright (d. 1962) |
| 105441 | September 15 | Birth | 1879 – Joseph Lyons, Australian educator and politician, 10th Prime Minister of Australia (d. 1939) |
| 105442 | September 15 | Birth | 1880 – Chujiro Hayashi, Japanese physician (d. 1940) |
| 105443 | September 15 | Birth | 1881 – Ettore Bugatti, Italian-French businessman, founded Bugatti (d. 1947) |
| 105444 | September 15 | Birth | 1883 – Esteban Terradas i Illa, Spanish mathematician and engineer (d. 1950) |
| 105445 | September 15 | Birth | 1886 – Paul Lévy, French mathematician and theorist (d. 1971) |
| 105446 | September 15 | Birth | 1887 – Carlos Dávila, Chilean journalist and politician, President of Chile (d. 1955) |
| 105447 | September 15 | Birth | 1888 – Antonio Ascari, Italian race car driver (d. 1925) |
| 105448 | September 15 | Birth | 1889 – Robert Benchley, American actor, screenwriter, and critic (d. 1945) |
| 105449 | September 15 | Birth | 1889 – Claude McKay, Jamaican-American poet and author (d. 1948) |
| 105450 | September 15 | Birth | 1890 – Ernest Bullock, English organist and composer (d. 1979) |