Aaron ben Meïr was a Palestinian Nasi (head of the Sanhedrin) in the first half of the tenth century. His name was brought to light by several fragments discovered in various genizoth (the store-room or depository in a synagogue (or cemetery), usually specifically for worn-out Hebrew-language books that were stored before they could receive a proper cemetery burial). The fragments contain an account of a controversy between Ben Meïr and the Talmudic Academies in Babylonia regarding the Hebrew calendar.