| 23941 | March 4 | Event | 1974 – People magazine is published for the first time in the United States as People Weekly. |
| 23942 | March 4 | Event | 1976 – The Northern Ireland Constitutional Convention is formally dissolved in Northern Ireland resulting in direct rule of Northern Ireland from London by the British parliament. |
| 23943 | March 4 | Event | 1977 – The 1977 Vrancea earthquake in eastern and southern Europe kills more than 1,500, mostly in the seriously damaged city of Bucharest, Romania. |
| 23944 | March 4 | Event | 1980 – Nationalist leader Robert Mugabe wins a sweeping election victory to become Zimbabwe's first black prime minister. |
| 23945 | March 4 | Event | 1983 – Bertha Wilson is appointed the first woman to sit on the Supreme Court of Canada. |
| 23946 | March 4 | Event | 1985 – The Food and Drug Administration approves a blood test for AIDS infection, used since then for screening all blood donations in the United States. |
| 23947 | March 4 | Event | 1986 – The Soviet Vega 1 begins returning images of Halley's Comet and the first images of its nucleus. |
| 23948 | March 4 | Event | 1991 – Sheikh Saad Al-Salim Al-Sabah, the Prime Minister of Kuwait, returns to his country for the first time since Iraq's invasion. |
| 23949 | March 4 | Event | 1996 – A derailed train in Weyauwega, Wisconsin, US, causes the emergency evacuation of 2,300 people for 16 days. |
| 23950 | March 4 | Event | 1998 – Gay rights: Oncale v. Sundowner Offshore Services, Inc.: The Supreme Court of the United States rules that federal laws banning on-the-job sexual harassment also apply when both parties are the same sex. |
| 23951 | March 4 | Event | 2001 – BBC bombing: A massive car bomb explodes in front of the BBC Television Centre in London, seriously injuring one person. The attack was attributed to the Real IRA. |
| 23952 | March 4 | Event | 2001 – Hintze Ribeiro disaster: A bridge collapses in northern Portugal, killing up to 70 people. |
| 23953 | March 4 | Event | 2002 – Afghanistan: Seven American Special Operations Forces soldiers and 200 Al-Qaeda Fighters are killed as American forces attempt to infiltrate the Shah-i-Kot Valley on a low-flying helicopter reconnaissance mission. |
| 23954 | March 4 | Event | 2009 – The International Criminal Court (ICC) issues an arrest warrant for Sudanese President Omar Hassan al-Bashir for war crimes and crimes against humanity in Darfur. Al-Bashir is the first sitting head of state to be indicted by the ICC since its esta |
| 23955 | March 4 | Event | 2013 – A plane crash in Democratic Republic of the Congo kills 6 people. |
| 23956 | March 4 | Event | 2015 – At least 34 miners die in a suspected gas explosion at the Zasyadko coal mine in rebel-held Donetsk region of Ukraine. |
| 23957 | March 4 | Birth | 895 – Liu Zhiyuan, Chinese emperor (d. 948) |
| 23958 | March 4 | Birth | 1188 – Blanche of Castile (d. 1252) |
| 23959 | March 4 | Birth | 1394 – Henry the Navigator, Portuguese son of John I of Portugal (d. 1460) |
| 23960 | March 4 | Birth | 1484 – George, Margrave of Brandenburg-Ansbach (d. 1543) |
| 23961 | March 4 | Birth | 1492 – Francesco de Layolle, Italian organist and composer (d. 1540) |
| 23962 | March 4 | Birth | 1602 – Kanō Tan'yū, Japanese painter (d. 1674) |
| 23963 | March 4 | Birth | 1651 – John Somers, 1st Baron Somers, English lawyer, jurist, and politician, Lord High Chancellor of Great Britain (d. 1716) |
| 23964 | March 4 | Birth | 1655 – Fra Galgario, Italian painter (d. 1743) |
| 23965 | March 4 | Birth | 1665 – Philip Christoph von Königsmarck, Swedish soldier (d. 1694) |
| 23966 | March 4 | Birth | 1678 – Antonio Vivaldi, Italian violinist and composer (d. 1741) |
| 23967 | March 4 | Birth | 1702 – Jack Sheppard, English criminal (d. 1724) |
| 23968 | March 4 | Birth | 1706 – Lauritz de Thurah, Danish architect, designed the Hermitage Hunting Lodge and Gammel Holtegård (d. 1759) |
| 23969 | March 4 | Birth | 1715 – James Waldegrave, 2nd Earl Waldegrave, English historian and politician (d. 1763) |
| 23970 | March 4 | Birth | 1719 – George Pigot, 1st Baron Pigot, English politician (d. 1777) |