Abu’l-Qāsim Ismāʿīl ibn ʿAbbād ibn al-ʿAbbās (Persian: ابوالقاسم اسماعیل بن عباد بن عباس‎; born 938 - died 30 March 995), better known as Sahib ibn Abbad (صاحب بن عباد), also known as al-Sahib (الصاحب), was a Persian scholar and statesman, who served as the grand vizier of the Buyid rulers of Ray from 976 to 995. A native of the suburbs of Isfahan, he was greatly interested in Arab culture, and wrote on dogmatic theology, history, grammar, lexicography, scholarly criticism and wrote poetry and belles-lettres.