| 27421 | March 11 | Death | 1198 – Marie of France, Countess of Champagne (b. 1145) |
| 27422 | March 11 | Death | 1486 – Albrecht III Achilles, Elector of Brandenburg (b. 1414) |
| 27423 | March 11 | Death | 1514 – Donato Bramante, Italian architect, designed the San Pietro in Montorio (b. 1444) |
| 27424 | March 11 | Death | 1575 – Matthias Flacius, Croatian theologian and reformer (b. 1520) |
| 27425 | March 11 | Death | 1602 – Emilio de' Cavalieri, Italian organist and composer (b. 1550) |
| 27426 | March 11 | Death | 1607 – Giovanni Maria Nanino, Italian composer and educator (b. 1543) |
| 27427 | March 11 | Death | 1722 – John Toland, Irish philosopher and theorist (b. 1670) |
| 27428 | March 11 | Death | 1759 – John Forbes, Scottish general (b. 1710) |
| 27429 | March 11 | Death | 1786 – Charles Humphreys, Colonial American politician, delegate for Pennsylvania to the Continental Congress from 1774-76 (b. 1714) |
| 27430 | March 11 | Death | 1820 – Benjamin West, American-English painter and academic (b. 1738) |
| 27431 | March 11 | Death | 1851 – George McDuffie, American lawyer and politician, 55th Governor of South Carolina (b. 1790) |
| 27432 | March 11 | Death | 1854 – Willard Richards, American religious leader (b. 1804) |
| 27433 | March 11 | Death | 1856 – James Beatty, Irish engineer (b. 1820) |
| 27434 | March 11 | Death | 1863 – Sir James Outram, 1st Baronet, English general (b. 1803) |
| 27435 | March 11 | Death | 1866 – Ulysses F. Doubleday, American soldier and politician (b. 1792) |
| 27436 | March 11 | Death | 1869 – Vladimir Odoyevsky, Russian philosopher and critic (b. 1803) |
| 27437 | March 11 | Death | 1870 – Moshoeshoe I of Lesotho (b. 1786) |
| 27438 | March 11 | Death | 1874 – Charles Sumner, American lawyer and politician (b. 1811) |
| 27439 | March 11 | Death | 1898 – William Rosecrans, American general and politician (b. 1819) |
| 27440 | March 11 | Death | 1898 – Dikran Tchouhadjian, Armenian composer and conductor (b. 1837) |
| 27441 | March 11 | Death | 1907 – Jean Casimir-Perier, French lawyer and politician, 6th President of France (b. 1847) |
| 27442 | March 11 | Death | 1908 – Edmondo De Amicis, Italian journalist and author (b. 1846) |
| 27443 | March 11 | Death | 1908 – Benjamin Waugh, American minister and activist (b. 1839) |
| 27444 | March 11 | Death | 1915 – Thomas Alexander Browne, English-Australian author (b. 1826) |
| 27445 | March 11 | Death | 1920 – Julio Garavito Armero, Colombian astronomer, mathematician, and engineer (b. 1865) |
| 27446 | March 11 | Death | 1927 – Xenophon Stratigos, Greek general and politician (b. 1869) |
| 27447 | March 11 | Death | 1931 – F. W. Murnau, German-American director, producer, and screenwriter (b. 1888) |
| 27448 | March 11 | Death | 1935 – Yusuf Akçura, Russian-Turkish activist (b. 1876) |
| 27449 | March 11 | Death | 1937 – Joseph S. Cullinan, American businessman, co-founded Texaco (b. 1860) |
| 27450 | March 11 | Death | 1944 – Hendrik Willem van Loon, Dutch-American journalist and historian (b. 1882) |