Abdullah ibn Muhammad ibn Abd al-Wahhab

Abdullah bin Muhammad Al Sheikh (1751–1829) was a Muslim scholar who served as the head of the judicial system during the First Saudi State, also known as the Emirate of Diriyah. He was a son of Muhammad ibn Abd al-Wahhab, who was credited with introducing the Salafiyyah form of Islam. Abdullah developed the doctrine of this religious belief. David Commins, an American scholar on Wahhabism, argues that Abdullah was the most significant son of Muhammad.