Ali ibn Yahya al-Armani was a famed Muslim military commander of the mid-9th century.
In 840, he was sent to Egypt as its governor, replacing Malik ibn Kaydur.[1]
Later he was named commander of the Caliphate's borderlands in Cilicia (the al-thughur as-Sha'miya), confronting the Byzantine Empire. He is the first Emir of Tarsus known to have exercised near-independent authority, taking advantage of the decline in the power of the Abbasid Caliphate's central government.[2] From this post, Ali undertook several summer raiding expeditions over the Taurus Mountains into Byzantine-held Anatolia: raids led by Ali are recorded for the years 851, 852, 853, 856, 859 and 860.[3] In 862 he was appointed governor of Armenia and Azerbaijan, and in the next year, he was killed in battle with the Byzantines.[3]