Aaron ibn Sargado or Aaron ben R. Joseph ha-Kohen (Hebrew: אהרן הכהן בן יוסף - כלף סרג'דו)[1] was a tenth-century AD gaon (Jewish religious leader) in Pumbedita, Babylonia.
Rav Shrira continues to note that Rabbi Ahron HaKohen was not of a family of scholars, but of wealthy merchants; he was elevated to the gaonate (presidency of a rabbinical academy) through the influence of his family.
Caleb ibn Sargado, the determined opponent of Saadia, who spent 60,000 zuzim in order to bring about the deposition of the gaon of Sura, was probably identical with Aaron, as Abraham Harkavy has shown.
[2] Four of Sargado's legal decisions on religious problems are preserved, and are printed in the collection, "Ḥemdah Genuza," Nos.
Like his opponent Saadia Gaon, Aaron was a Bible commentator, and parts of his commentary are extant in St. Petersburg.