| 124231 | October 31 | Event | 1903 – Purdue Wreck, a railroad train collision in Indianapolis, killed 17 people, including 14 players of the Purdue University football team. |
| 124232 | October 31 | Event | 1913 – Dedication of the Lincoln Highway, the first automobile highway across United States. |
| 124233 | October 31 | Event | 1913 – The Indianapolis Streetcar Strike and subsequent riot begins. |
| 124234 | October 31 | Event | 1917 – World War I: Battle of Beersheba: The "last successful cavalry charge in history". |
| 124235 | October 31 | Event | 1918 – World War I: Dissolution of the Austro-Hungarian Empire. |
| 124236 | October 31 | Event | 1922 – Benito Mussolini is made Prime Minister of Italy |
| 124237 | October 31 | Event | 1923 – The first of 160 consecutive days of 100° Fahrenheit at Marble Bar, Western Australia. |
| 124238 | October 31 | Event | 1924 – World Savings Day is announced in Milan, Italy by the Members of the Association at the 1st International Savings Bank Congress (World Society of Savings Banks). |
| 124239 | October 31 | Event | 1926 – Magician Harry Houdini dies of gangrene and peritonitis that develops after his appendix ruptures. |
| 124240 | October 31 | Event | 1938 – Great Depression: In an effort to restore investor confidence, the New York Stock Exchange unveils a fifteen-point program aimed to upgrade protection for the investing public. |
| 124241 | October 31 | Event | 1940 – World War II: The Battle of Britain ends: The United Kingdom prevents a possible German invasion. |
| 124242 | October 31 | Event | 1941 – After 14 years of work, Mount Rushmore is completed. |
| 124243 | October 31 | Event | 1941 – World War II: The destroyer USS Reuben James is torpedoed by a German U-boat near Iceland, killing more than 100 U.S. Navy sailors. It is the first U.S. Navy vessel sunk by enemy action in WWII. |
| 124244 | October 31 | Event | 1943 – World War II: An F4U Corsair accomplishes the first successful radar-guided interception by a United States Navy or Marine Corps aircraft. |
| 124245 | October 31 | Event | 1944 – Erich Göstl, a member of the Waffen-SS, is awarded the Knight's Cross of the Iron Cross, to recognise extreme battlefield bravery, after losing his face and eyes during the Battle of Normandy. |
| 124246 | October 31 | Event | 1956 – Suez Crisis: The United Kingdom and France begin bombing Egypt to force the reopening of the Suez Canal. |
| 124247 | October 31 | Event | 1961 – In the Soviet Union, Joseph Stalin's body is removed from Vladimir Lenin's Tomb. |
| 124248 | October 31 | Event | 1963 – An explosion at the Indiana State Fair Coliseum (now Pepsi Coliseum) in Indianapolis kills 74 people and injures another 400 during an ice skating show. A faulty propane tank connection in a concession stand is blamed. |
| 124249 | October 31 | Event | 1968 – Vietnam War October surprise: Citing progress with the Paris peace talks, US President Lyndon B. Johnson announces to the nation that he has ordered a complete cessation of "all air, naval, and artillery bombardment of North Vietnam" effective Nove |
| 124250 | October 31 | Event | 1969 – the Disappearance of Patricia Spencer and Pamela Hobley occurs. |
| 124251 | October 31 | Event | 1973 – Mountjoy Prison helicopter escape. Three Provisional Irish Republican Army members escape from Mountjoy Prison, Dublin, Republic of Ireland aboard a hijacked helicopter that lands in the exercise yard. |
| 124252 | October 31 | Event | 1984 – Indian Prime Minister Indira Gandhi is assassinated by two Sikh security guards. Riots break out in New Delhi and other cities and nearly 10,000 Sikhs are killed. |
| 124253 | October 31 | Event | 1994 – American Eagle Flight 4184 crashes near Roselawn, Indiana, killing 68. |
| 124254 | October 31 | Event | 1998 – Iraq disarmament crisis begins: Iraq announces it would no longer cooperate with United Nations weapons inspectors. |
| 124255 | October 31 | Event | 1999 – Yachtsman Jesse Martin returns to Melbourne after 11 months of circumnavigating the world, solo, non-stop and unassisted. |
| 124256 | October 31 | Event | 1999 – EgyptAir Flight 990 crashes into the Atlantic Ocean near Nantucket, killing all 217 people on board. |
| 124257 | October 31 | Event | 2000 – Soyuz TM-31 launches, carrying the first resident crew to the International Space Station. The ISS has been crewed continuously since then. |
| 124258 | October 31 | Event | 2000 – Singapore Airlines Flight 006 crashes on takeoff in Taipei killing 83 people. |
| 124259 | October 31 | Event | 2000 – United Nations Security Council Resolution 1325 is adopted. |
| 124260 | October 31 | Event | 2002 – A federal grand jury in Houston, Texas indicts former Enron chief financial officer Andrew Fastow on 78 counts of wire fraud, money laundering, conspiracy and obstruction of justice related to the collapse of his ex-employer. |