Ahmad ibn Isma'il ibn Ali al-Hashimi

Ahmad ibn Isma'il ibn Ali was a minor Abbasid personage and provincial governor who was active in the late eighth and early ninth centuries.

Life Ahmad was the son of Isma'il and a grandson of Ali ibn Abdallah ibn al-Abbas, and was a first cousin of the first two Abbasid caliphs al-Saffah and al-Mansur . During the caliphate of al-Mahdi he was appointed to the governorship of Mosul (781–783/5) and later became al-Mahdi's final governor of Mecca. Under Harun al-Rashid he was again appointed to Mecca and also served as governor of the Yemen .

In 803 he was appointed as governor of Egypt. During his tenure in that province, he received an appeal from the Aghlabid governor of Ifriqiya Ibrahim ibn al-Aghlab for help to quell disturbances in the region of Tripoli. He remained in Egypt in two years, before being dismissed and replaced with Abdallah ibn Muhammad ibn Ibrahim al-Zaynabi in 805.