Amr ibn al-As ibn Wa'il al-Sahmi (c. 585 – 664) was an Arab commander and companion of Muhammad who led the Muslim conquest of Egypt and served as its governor in 640–646 and 658–664. The son of a wealthy Qurayshite, Amr embraced Islam in c. 629 and was assigned important roles in the nascent Muslim community by the Islamic prophet Muhammad. The first caliph Abu Bakr (r. 632–634) appointed Amr as a commander of what became the conquest of Syria. He conquered most of Palestine, to which he was appointed governor, and helped lead the Arabs to decisive victories over the Byzantines at the battles of Ajnadayn and the Yarmuk in 634 and 636.
Amr launched the expedition that conquered Egypt on his own initiative in late 639, defeating the Byzantines in a string of victories ending with the surrender of Alexandria in 641 or 642. It was the swiftest of the early Muslim conquests. This was followed by westward advances by Amr as far as Tripoli in present-day Libya. In a treaty signed with the Byzantine governor Cyrus, Amr guaranteed the security of Egypt's population and imposed a poll tax on non-Muslim adult men. He maintained the Coptic-dominated bureaucracy and cordial ties with the Coptic patriarch Benjamin. He founded Fustat as the provincial capital with the mosque later called after him at its center. Amr ruled relatively independently, acquired significant wealth, and upheld the interests of the Arab conquerors who formed Fustat's garrison in relation to the central authorities in Medina. After gradually diluting Amr's authority, Caliph Uthman (r. 644–656) dismissed him in 646 after accusations of incompetence from his successor Abd Allah ibn Sa'd.
