Ƙasar Saudiyya ta zamani ta kasance a baya ta ƙunshi yankuna huɗu daban-daban: Hejaz, Najd da sassan Gabashin Arabiya (Al-Ahsa) da Kudancin Arabiya ('Asir). Masarautar Saudiyya an kafa ta ne a 1932 ta Ibn Saud. Ya haɗu da yankuna huɗu zuwa cikin ƙasa ɗaya ta hanyar jerin cin nasara da aka fara a 1902 tare da kama Riyadh, gidan kakannin danginsa, Gidan Saudiyya. Tun lokacin da Saudiyya ta kasance cikakken mulkin mallaka, Islama ta gado ta mallaki Wahhabi.
cikakken mulkin mallaka