| 25291 | March 6 | Birth | 1475 – Michelangelo, Italian painter and sculptor (d. 1564) |
| 25292 | March 6 | Birth | 1483 – Francesco Guicciardini, Italian historian and politician (d. 1540) |
| 25293 | March 6 | Birth | 1495 – Luigi Alamanni, Italian poet and diplomat (d. 1556) |
| 25294 | March 6 | Birth | 1619 – Cyrano de Bergerac, French author and playwright (d. 1655) |
| 25295 | March 6 | Birth | 1663 – Francis Atterbury, English bishop (d. 1732) |
| 25296 | March 6 | Birth | 1706 – George Pocock, English admiral (d. 1792) |
| 25297 | March 6 | Birth | 1716 – Pehr Kalm, Swedish-Finnish botanist and explorer (d. 1779) |
| 25298 | March 6 | Birth | 1724 – Henry Laurens, British-American merchant and politician, 5th President of the Continental Congress (d. 1792) |
| 25299 | March 6 | Birth | 1761 – Antoine-François Andréossy, French general and diplomat (d. 1828) |
| 25300 | March 6 | Birth | 1779 – Antoine-Henri Jomini, French general (d. 1869) |
| 25301 | March 6 | Birth | 1785 – Karol Kurpiński, Polish composer and conductor (d. 1857) |
| 25302 | March 6 | Birth | 1787 – Joseph von Fraunhofer, German physicist and astronomer (d. 1826) |
| 25303 | March 6 | Birth | 1806 – Elizabeth Barrett Browning, English-Italian poet and translator (d. 1861) |
| 25304 | March 6 | Birth | 1812 – Aaron Lufkin Dennison, American businessman, co-founded the Waltham Watch Company (d. 1895) |
| 25305 | March 6 | Birth | 1817 – Princess Clémentine of Orléans (d. 1907) |
| 25306 | March 6 | Birth | 1818 – William Claflin, American businessman and politician, 27th Governor of Massachusetts (d. 1905) |
| 25307 | March 6 | Birth | 1823 – Charles I of Württemberg (d. 1891) |
| 25308 | March 6 | Birth | 1831 – Philip Sheridan, Irish-American general (d. 1888) |
| 25309 | March 6 | Birth | 1834 – George du Maurier, French-English author and illustrator (d. 1896) |
| 25310 | March 6 | Birth | 1849 – Georg Luger, Austrian gun designer, designed the Luger pistol (d. 1923) |
| 25311 | March 6 | Birth | 1870 – Oscar Straus, Viennese composer and conductor (d. 1954) |
| 25312 | March 6 | Birth | 1871 – Afonso Costa, Portuguese lawyer and politician, 59th Prime Minister of Portugal (d. 1937) |
| 25313 | March 6 | Birth | 1872 – Ben Harney, American pianist and composer (d. 1938) |
| 25314 | March 6 | Birth | 1872 – Paul Juon, Russian-Swiss composer (d. 1940) |
| 25315 | March 6 | Birth | 1882 – F. Burrall Hoffman, American architect, co-designed Villa Vizcaya (d. 1980) |
| 25316 | March 6 | Birth | 1882 – Guy Kibbee, American actor and singer (d. 1956) |
| 25317 | March 6 | Birth | 1884 – Molla Mallory, Norwegian-American tennis player (d. 1959) |
| 25318 | March 6 | Birth | 1885 – Ring Lardner, American author and journalist (d. 1933) |
| 25319 | March 6 | Birth | 1886 – Jam Handy, American swimmer and water polo player (d. 1983) |
| 25320 | March 6 | Birth | 1891 – Lidia Quaranta, Italian actress (d. 1928) |