| 33586 | March 26 | Birth | 1634 – Domenico Freschi, Italian priest and composer (d. 1710) |
| 33587 | March 26 | Birth | 1687 – Sophia Dorothea of Hanover (d. 1757) |
| 33588 | March 26 | Birth | 1698 – Prokop Diviš, Czech priest, scientist and inventor (d. 1765) |
| 33589 | March 26 | Birth | 1749 – William Blount, American politician (d. 1800) |
| 33590 | March 26 | Birth | 1753 – Benjamin Thompson, American-French physicist and politician, Under-Secretary of State for the Colonies (d. 1814) |
| 33591 | March 26 | Birth | 1773 – Nathaniel Bowditch, American mathematician and navigator (d. 1838) |
| 33592 | March 26 | Birth | 1794 – Julius Schnorr von Carolsfeld, German painter (d. 1872) |
| 33593 | March 26 | Birth | 1804 – David Humphreys Storer, American physician and academic (d. 1891) |
| 33594 | March 26 | Birth | 1814 – Charles Mackay, Scottish anthologist, journalist, and author (d. 1889) |
| 33595 | March 26 | Birth | 1845 – Juhan Maaker, Estonian bagpipe player (d. 1930) |
| 33596 | March 26 | Birth | 1854 – Maurice Lecoq, French target shooter (d. 1925) |
| 33597 | March 26 | Birth | 1856 – William Massey, Irish-New Zealand farmer and politician, 19th Prime Minister of New Zealand (d. 1925) |
| 33598 | March 26 | Birth | 1859 – A. E. Housman, English poet and scholar (d. 1936) |
| 33599 | March 26 | Birth | 1859 – Adolf Hurwitz, German-Swiss mathematician and academic (d. 1919) |
| 33600 | March 26 | Birth | 1860 – André Prévost, French tennis player (d. 1919) |
| 33571 | March 26 | Event | 1991 – Argentina, Brazil, Uruguay and Paraguay sign the Treaty of Asunción, establishing Mercosur, the South Common Market. |
| 33572 | March 26 | Event | 1991 – Five South Korean boys, nicknamed the Frog Boys, disappear while hunting for frogs and are murdered in a case that remains unsolved. |
| 33573 | March 26 | Event | 1991 – Local self-government is restored after three decades of centralized control in South Korea. |
| 33574 | March 26 | Event | 1995 – The Schengen Treaty comes into effect. |
| 33575 | March 26 | Event | 1997 – Thirty-nine bodies are found in the Heaven's Gate mass suicides. |
| 33576 | March 26 | Event | 1998 – Oued Bouaicha massacre in Algeria: Fifty-two people are killed with axes and knives, 32 of them children under the age of two. |
| 33577 | March 26 | Event | 1999 – The "Melissa worm" infects Microsoft word processing and e-mail systems around the world. |
| 33578 | March 26 | Event | 1999 – A jury in Michigan finds Dr. Jack Kevorkian guilty of second-degree murder for administering a lethal injection to a terminally ill man. |
| 33579 | March 26 | Event | 2005 – The Taiwanese government calls on one million Taiwanese to demonstrate in Taipei, in opposition to the Anti-Secession Law of the People's Republic of China. Around 200,000 to 300,000 attend the demonstration. |
| 33580 | March 26 | Event | 2010 – The ROKS Cheonan sinks off the west coast of South Korea near Baengnyeong Island in the Yellow Sea, killing 46 seamen. |
| 33581 | March 26 | Event | 2014 – A massive fire breaks out in Back Bay, Boston killing 2 firefighters and injuring at least 18 people. |
| 33582 | March 26 | Birth | 1031 – Malcolm III of Scotland (d. 1093) |
| 33583 | March 26 | Birth | 1516 – Conrad Gessner, Swiss botanist and zoologist (d. 1565) |
| 33584 | March 26 | Birth | 1554 – Charles, Duke of Mayenne (d. 1611) |
| 33585 | March 26 | Birth | 1584 – John II, Count Palatine of Zweibrücken (d. 1635) |