- 18 October 1970 - Hussayn I, King of the Hijaaz and former pretender of Iraaq, dies in Jerusalem, Judea.
- 17 October 1983 - Frederick Valdemar Erastus Peterson, First President of Louisianne from 23 September, 1944 to 17 September, 1951, dies.
- 3-5 October 1870 - Battle between monks of the Holy Mountain and Ottoman troops achieving independence for the Holy Mountain.
- 11 October 1878- The Treaty of Karyes by which the Ottoman Empire recognizes the independence of the Monastic Republic.
- 17 October 1973 - The Oil Crisis of Hijra 1393 starts, caused by a dramatic fall in oil prices.