| 33511 | March 25 | Death | 2014 – Lorna Arnold, English historian and author (b. 1915) |
| 33512 | March 25 | Death | 2014 – Hank Lauricella, American football player and politician (b. 1930) |
| 33513 | March 25 | Death | 2014 – Eddie Lawrence, American actor, singer, and playwright (b. 1919) |
| 33514 | March 25 | Death | 2014 – Jon Lord, Canadian businessman and politician (b. 1956) |
| 33515 | March 25 | Death | 2014 – Sonny Ruberto, American baseball player, coach, and manager (b. 1946) |
| 33516 | March 25 | Death | 2014 – Jonathan Schell, American journalist and author (b. 1943) |
| 33517 | March 25 | Death | 2014 – Ralph Wilson, American businessman, founded the Buffalo Bills (b. 1918) |
| 33518 | March 25 | Death | 2015 – Indra Bania, Indian actor, director, and playwright (b. 1942) |
| 33519 | March 25 | Death | 2015 – George Fischbeck, American journalist and educator (b. 1922) |
| 33520 | March 25 | Death | 2015 – Ivo Garrani, Italian actor (b. 1924) |
| 33521 | March 25 | Death | 2015 – Pedro Reyes, Spanish comedian and actor (b. 1961) |
| 33522 | March 25 | Death | 2015 – Bill Slayback, American baseball player and singer (b. 1948) |
| 33523 | March 25 | Death | 2015 – Ron Suart, English footballer and manager (b. 1920) |
| 33524 | March 25 | Holiday and observance | Anniversary of the Arengo and the Feast of the Militants (San Marino) |
| 33525 | March 25 | Holiday and observance | Birkat Hachama is recited every 28 years on this day according to Julian calendar (Judaism) |
| 33526 | March 25 | Holiday and observance | Christian feast days:Ælfwold II of SherborneBarontius and DesideriusBlessed Marie-Alphonsine Danil GhattasOmelyan Kovch (Ukrainian Greek Catholic Church)Dismas, the "Good Thief"Humbert of MaroillesQuirinus of TegernseeMarch 25 (Eastern Orthodox liturgics) |
| 33527 | March 25 | Holiday and observance | Earliest day on which Seward's Day can fall, while March 31 is the latest celebrated on the last Monday in March. (Alaska) |
| 33528 | March 25 | Holiday and observance | Feast of the Annunciation (Christianity), and its related observances:Historic start of the new year (Lady Day) in England, Wales, Ireland, and the future United States until the adoption of the Gregorian calendar in 1752. (The year 1751 began on 25 March |
| 33529 | March 25 | Holiday and observance | Freedom Day (Belarus) |
| 33530 | March 25 | Holiday and observance | International Day of Remembrance of the Victims of Slavery and the Transatlantic Slave Trade (International) |
| 33531 | March 25 | Holiday and observance | International Day of Solidarity with Detained and Missing Staff Members (United Nations General Assembly) |
| 33532 | March 25 | Holiday and observance | Maryland Day (Maryland) |
| 33533 | March 25 | Holiday and observance | Revolution Day (Greece), celebrates the declaration of the start of Greek War of Independence from the Ottoman Empire, in 1821. |
| 33534 | March 25 | Holiday and observance | Struggle for Human Rights Day (Slovakia) |
| 33535 | March 25 | Holiday and observance | Tolkien Reading Day |
| 33536 | March 25 | Holiday and observance | International Day of Remembrance of the Victims of Slavery and the Transatlantic Slave Trade |
| 33537 | March 26 | Event | 590 – Emperor Maurice proclaims his son Theodosius as co-emperor of the Byzantine Empire. |
| 33538 | March 26 | Event | 1027 – Pope John XIX crowns Conrad II as Holy Roman Emperor. |
| 33539 | March 26 | Event | 1169 – Saladin becomes the emir of Egypt. |
| 33540 | March 26 | Event | 1344 – The Siege of Algeciras, one of the first European military engagements where gunpowder was used, comes to an end. |