the dominant form of islam in saudi arabia is
Islam in Saudi Arabia Whether Salafis/Wahhabis are a majority in Saudi Arabia is disputed, with one estimate putting their number at only 22.9% of the native population (concentrated in Najd).[5] The Wahhabi mission has been dominant in Najd for two hundred years, but in most other parts of the country—Hejaz, the Eastern Province, Najran—it has dominated only since 1913-1925.[6] Most of the 15 to 20 million Saudi citizens are Sunni Muslims,[7] while the eastern regions are populated mostly by Twelver Shia, and there are Zaydi Shia in the southern regions.[8] According to a number of sources, only a minority of Saudis consider themselves Wahhabis, although according to other sources, the Wahhabi affiliation is up to 40%, making it a very dominant minority, at the very least using a native population of 17 million based on "2008-9 estimates".[5][9][10][11] In addition, the next largest affiliation is with Salafism, which encompasses all of the central principles of Wahhabism, with a number of minor additional accepted principles differentiating the two.[citation needed]