'''Abdulaziz bin Abdul Rahman Al Saud''' ({{lang-ar|عبد العزيز بن عبد الرحمن آل سعود|translit=ʾAbdʿAbd al ʿAzīz bin ʾAbdʿAbd ar Raḥman as Suʿūd}}; 15 January 1875<ref group="note">Ibn Saud's birth year has been a source of debate. It is generally accepted as 1875, although a few sources give it as 1880. According to British author [[Robert Lacey]]'s book ''The Kingdom'', a leading Saudi historian found records that show Ibn Saud in 1891 greeting an important tribal delegation. The historian reasoned that a 10 or 11-year-old child (as given by the 1880 birth date) would have been too young to be allowed to greet such a delegation, while an adolescent of 15 or 16 (as given by the 1875 date) would likely have been allowed. When Lacey interviewed one of Ibn Saud's sons prior to writing the book, the son recalled that his father often laughed at records showing his birth date to be 1880. Ibn Saud's response to such records was reportedly that "I swallowed four years of my life." p. 561"</ref> – 9 November 1953), known in the Western world mononymously as '''Ibn Saud''' ({{lang-ar|ابن سعود}}; ''Ibn Suʿūd''),<ref group="note">''Ibn Saud'', meaning "son of Saud" (see [[Arabic name#Nasab|Arabic name]]), was a sort of title borne by previous heads of the [[House of Saud]], similar to a [[Scottish clan]] chief's title of "the MacGregor" or "the MacDougal". When used without comment it refers solely to Abdulaziz bin Abdul Rahman, although prior to the capture of [[Riyadh]] in 1902 it referred to his father, [[Abdul Rahman bin Faisal]] {{harv|Lacey|1982|pp=15,65}}.</ref> was an Arab political and religious leader who founded [[Saudi Arabia]] – the third Saudi state – and reigned as its first [[King of Saudi Arabia|king]] from 23 September 1932 until his death in 1953. He had ruled parts of the kingdom since 1902, having previously been [[Emirate of Riyadh|Emir]], [[Sultanate of Nejd|Sultan]], and [[King of Nejd]], and [[King of Hejaz]].<ref>{{cite encyclopedia|title=Ibn Saud|author=John B. Glubb|author-link=John Bagot Glubb|url=https://www.britannica.com/biography/Ibn-Saud|date=5 November 2021|encyclopedia=[[Encyclopædia Britannica]]}}</ref>
Ibn Saud was the son of [[Abdul Rahman bin Faisal, Emir of Nejd]], and [[Sara bint Ahmed Al Sudairi]]. The family were exiled from their residence in the city of Riyadh in 1890. Ibn Saud reconquered Riyadh in 1902, starting three decades of conquests that made him the ruler of nearly all of central and north Arabia. He consolidated his control over the [[Nejd]] in 1922, then conquered the [[Hejaz]] in 1925. He extended his dominions into what later became the Kingdom of Saudi Arabia in 1932. Ibn Saud's victory and his support for [[Islamic revival]]ists would greatly bolster [[pan-Islamism]] across the [[Islamic world]].<ref>{{Cite book|author=Muhamad Ali|title=Islam and Colonialism: Becoming Modern in Indonesia and Malaya|publisher=Edinburgh University Press|year=2016|isbn=978-1-4744-0920-9|location=Tun
