| 119371 | October 18 | Birth | 1990 – Bristol Palin, American author |
| 119372 | October 18 | Birth | 1990 – Carly Schroeder, American actress |
| 119373 | October 18 | Birth | 1991 – Roly Bonevacia, Dutch footballer |
| 119374 | October 18 | Birth | 1991 – Tyler Posey, American actor and producer |
| 119375 | October 18 | Birth | 1992 – John John Florence, American surfer |
| 119376 | October 18 | Death | 325 – Emperor Ming of Jin (b. 299) |
| 119377 | October 18 | Death | 707 – Pope John VII (b. 650) |
| 119378 | October 18 | Death | 1035 – Sancho III of Pamplona (b. 992) |
| 119379 | October 18 | Death | 1101 – Hugh I, Count of Vermandois (b. 1053) |
| 119380 | October 18 | Death | 1141 – Leopold, Duke of Bavaria (b. 1108) |
| 119381 | October 18 | Death | 1382 – James Butler, 2nd Earl of Ormond, Irish politician, Lord Justice of Ireland (b. 1331) |
| 119382 | October 18 | Death | 1417 – Pope Gregory XII (b. 1326) |
| 119383 | October 18 | Death | 1480 – Uhwudong, Korean dancer and poet (b. 1440) |
| 119384 | October 18 | Death | 1503 – Pope Pius III (b. 1439) |
| 119385 | October 18 | Death | 1541 – Margaret Tudor, English wife of James IV of Scotland (b. 1489) |
| 119386 | October 18 | Death | 1545 – John Taverner, English organist and composer (b. 1490) |
| 119387 | October 18 | Death | 1558 – Mary of Hungary (b. 1505) |
| 119388 | October 18 | Death | 1561 – Yamamoto Kansuke, Japanese samurai (b. 1501) |
| 119389 | October 18 | Death | 1564 – Johannes Acronius Frisius, German physician and mathematician (b. 1520) |
| 119390 | October 18 | Death | 1570 – Manuel da Nóbrega, Portuguese-Brazilian priest and missionary (b. 1517) |
| 119391 | October 18 | Death | 1604 – Igram van Achelen, Dutch lawyer and politician (b. 1528) |
| 119392 | October 18 | Death | 1646 – Isaac Jogues, French priest, missionary, and martyr (b. 1607) |
| 119393 | October 18 | Death | 1667 – Fasilides, Ethiopian emperor (b. 1603) |
| 119394 | October 18 | Death | 1678 – Jacob Jordaens, Belgian painter illustrator (b. 1593) |
| 119395 | October 18 | Death | 1739 – António José da Silva, Brazilian-Portuguese playwright (b. 1705) |
| 119396 | October 18 | Death | 1744 – Sarah Churchill, Duchess of Marlborough (b. 1660) |
| 119397 | October 18 | Death | 1770 – John Manners, Marquess of Granby, English general and politician, Lord Lieutenant of Derbyshire (b. 1721) |
| 119398 | October 18 | Death | 1775 – Christian August Crusius, German philosopher and theologian (b. 1715) |
| 119399 | October 18 | Death | 1817 – Etienne Nicolas Méhul, French pianist and composer (b. 1763) |
| 119400 | October 18 | Death | 1865 – Henry John Temple, 3rd Viscount Palmerston, English soldier and politician, Prime Minister of the United Kingdom (b. 1784) |