Aaron ha-Cohen (Hebrew: אהרן הכהן) was a head of the Palestinian Gaonate in the 10th century.
According to a fragment found in the Cairo Genizah (T-S 312.82), Aaron ha-Cohen reigned as Gaon after Abraham ben Aaron (the edge of the fragment is cut and does not allow for reconstruction of the length of his reign).
[1] It is possible that he is the Aaron ha-Cohen who wrote a calligraphic invitation to a certain elder Suwayd and his son to come to a lecture on the Sabbath.
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