Dosa ben Saadia (Hebrew: דּוֹסָא בֶּן סַעֲדְיָה, romanized: Dosā ben Saʿăḏyā; Arabic: دوسة بن سعيد الفيومي, romanized: Dawsa bin Saʻīd al-Fayyūmi; c. 935 – 1018) was a Talmudic scholar and philosopher who was the Gaon of Sura from 1012 until his death in 1018.