Al-ʿAbbās ibn al-Ḥasan al-Jarjarāʾī was a senior Abbasid official and vizier from October 904 until his murder on 17 December 908. As his nisba shows, he came from the locality of Jarjaraya, south of Baghdad. He began his career as private secretary to al-Qasim ibn Ubayd Allah. When al-Qasim died in October 904, he recommended either Abbas or the Jarrahid Ali Ibn Isa as his successor; when the latter declined, Caliph al-Muktafi (reigned 902–908) duly appointed Abbas to the post. His tenure of office was marked by a close alliance with the Banu'l-Furat, whose leader Abu'l-Hasan Ali became his chief aide and designated successor.