| 113401 | October 4 | Event | 1963 – Hurricane Flora kills 6,000 in Cuba and Haiti. |
| 113402 | October 4 | Event | 1965 – Pope Paul VI arrives in New York, the first Pope to visit the United States of America and the Western hemisphere. |
| 113403 | October 4 | Event | 1966 – Basutoland becomes independent from the United Kingdom and is renamed Lesotho. |
| 113404 | October 4 | Event | 1967 – Omar Ali Saifuddien III of Brunei abdicates in favour of his son, His Majesty Sultan Hassanal Bolkiah. |
| 113405 | October 4 | Event | 1974 – Founding of the New Democracy party in Greece. |
| 113406 | October 4 | Event | 1976 – Official launch of the InterCity 125 high speed train. |
| 113407 | October 4 | Event | 1983 – Richard Noble sets a new land speed record of 633.468 miles per hour (1,019.468 km/h), driving Thrust2 at the Black Rock Desert in Nevada. |
| 113408 | October 4 | Event | 1985 – The Free Software Foundation is founded in Massachusetts, United States. |
| 113409 | October 4 | Event | 1988 – U.S. televangelist Jim Bakker is indicted for fraud. |
| 113410 | October 4 | Event | 1991 – The Protocol on Environmental Protection to the Antarctic Treaty is opened for signature. |
| 113411 | October 4 | Event | 1992 – The Rome General Peace Accords ends a 16-year civil war in Mozambique. |
| 113412 | October 4 | Event | 1992 – El Al Flight 1862: An El Al Boeing 747-258F crashes into two apartment buildings in Amsterdam, killing 43 including 39 on the ground. |
| 113413 | October 4 | Event | 1993 – Russian Constitutional Crisis: In Moscow, tanks bombard the White House, a government building that housed the Russian parliament, while demonstrators against President Boris Yeltsin rally outside. |
| 113414 | October 4 | Event | 1997 – The second largest cash robbery in U.S. history occurs at the Charlotte, North Carolina office of Loomis, Fargo and Company. A Federal Bureau of Investigation investigation eventually results in 24 convictions and the recovery of approximately 95% |
| 113415 | October 4 | Event | 2001 – NATO confirms invocation of Article 5 of the North Atlantic Treaty. |
| 113416 | October 4 | Event | 2001 – Siberia Airlines Flight 1812: A Sibir Airlines Tupolev Tu-154 crashes into the Black Sea after being struck by an errant Ukrainian S-200 missile. Seventy-eight people are killed. |
| 113417 | October 4 | Event | 2003 – Maxim restaurant suicide bombing in Haifa, Israel: Twenty-one Israelis, Jews and Arabs, are killed, and 51 others wounded. |
| 113418 | October 4 | Event | 2004 – SpaceShipOne wins Ansari X Prize for private spaceflight, by being the first private craft to fly into space. |
| 113419 | October 4 | Event | 2010 – The Ajka plant accident in western Hungary releases about a million cubic metres (35 million cubic feet) of liquid alumina sludge. Nine people are killed and 122 injured, and the Marcal and Danube rivers are severely contaminated. |
| 113420 | October 4 | Birth | 1160 – Alys of France, Countess of the Vexin (d. 1220) |
| 113421 | October 4 | Birth | 1274 – Rudolf I, Duke of Bavaria (d. 1319) |
| 113422 | October 4 | Birth | 1276 – Margaret of Brabant (d. 1311) |
| 113423 | October 4 | Birth | 1289 – Louis X of France (d. 1316) |
| 113424 | October 4 | Birth | 1331 – James Butler, 2nd Earl of Ormond, Irish politician, Lord Justice of Ireland (d. 1382) |
| 113425 | October 4 | Birth | 1379 – Henry III of Castile (d. 1406) |
| 113426 | October 4 | Birth | 1515 – Lucas Cranach the Younger, German painter (d. 1586) |
| 113427 | October 4 | Birth | 1542 – Robert Bellarmine, Italian cardinal and saint (d. 1621) |
| 113428 | October 4 | Birth | 1550 – Charles IX of Sweden (d. 1611) |
| 113429 | October 4 | Birth | 1562 – Christen Sørensen Longomontanus, Danish astronomer and author (d. 1647) |
| 113430 | October 4 | Birth | 1570 – Péter Pázmány, Hungarian cardinal and philosopher (d. 1637) |