Abu'l-Hasan Ali ibn Muhammad ibn Musa ibn al-Hasan ibn al-Furat (855 – 18 July 924) was a senior official of the Abbasid Caliphate who served three times as vizier under Caliph al-Muqtadir. Intelligent and well educated, Ali emerged into prominence as an able fiscal administrator and deputy to his older brother Ahmad. Eventually he came to lead one of the two major and rival court factions during al-Muqtadir's caliphate, the Banu'l-Furat, the other being the group of officials around the commander-in-chief Mu'nis al-Muzaffar and the vizier Ali ibn Isa al-Jarrah. He played an important role in the selection of al-Muqtadir as caliph in 908, going on to serve as vizier in 908–912, during which time he succeeded in re-incorporating Fars into the Caliphate and to restore a measure of authority over the Sajids of Adharbayjan. After a second tenure in 917–918 he was imprisoned by his successor, and was released in 923, becoming vizier for the third and last time soon after. His brutality towards his rivals during his third tenure, coupled with military failures against the Qarmatians, caused his deposition and execution, along with his son al-Muhassin, on 18 July 924.
Ali's family had been of some prominence at Baghdad already in the early 9th century, but it was his father Muhammad ibn Musa who first occupied an important administrative post. Ali began his career alongside his brother Ahmad during the late caliphate of al-Mu'tamid (reigned 870–892) and the regency of al-Muwaffaq. Both were protégés of the fellow Shi'ite Isma'il ibn Bulbul, who, after becoming vizier to both al-Mu'tamid and al-Muwaffaq in 885, brought them into the administration as fiscal experts and entrusted them with the department of land revenue of the Sawad. Following Ibn Bulbul's dismissal, Ahmad was imprisoned for a while, but at the accession of al-Mu'tadid (r. 892–902) in 892, he was released and entrusted once more with the fiscal department of the Sawad, and later of all the land tax departments, with Ali as his deputy.