Abū Isḥāq Ibrāhīm Ibn ʿAṭāʾ (Abraham ben Nathan) was leader of Qayrawanese Jewry in the first third of the eleventh century. He was a member of a wealthy elite that included the Ben Berekhiah, Tahertī, and Ibn al-Majjānī families. His father, Nathan, may have been a communal official, although this is not clear. He was a major supporter of the academy (betmidrash) in Qayrawan and was also a generous contributor to the Babylonian yeshivot, particularly to the Sura yeshiva, the renewal of which he helped to finance. Ibn ʿAṭāʾ served as court physician to the Zirid amirs Bādis (r. 996–10…