Thamal al-Dulafi (Arabic: ثمل الدلفي, romanized: Thamal al-Dulafī; fl. 917/8–932) was an Abbasid military commander and longtime governor (wali or amir) of Tarsus and the borderlands with the Byzantine Empire in Cilicia (al-thughur al-Shamiya). A former Dulafid slave, he commanded several successful raiding expeditions, mostly by sea, against the Byzantines, but also against the Fatimids in Egypt and against the Qarmatians in Iraq.