David ben Boaz (Hebrew: דוד בן בעז, Arabic: Abu Sa'id Dawud ibn Bu'az) was a Karaite Jewish scholar who flourished in the tenth century CE.
He was thus considered resh galuta or exilarch of the Karaite community within the Abbasid Caliphate, in opposition to the rabbinical claimant The Karaite chronicler al-Hiti mentions David under the year 383 of the Hijrah (993 CE.
Of these three only a fragment of the second, comprising Leviticus and the latter half of Deuteronomy, is still extant in manuscript in the St. Petersburg Library.
In this commentary, says Harkavy, David frequently attacks Saadia Gaon, whom he never calls by name, but by the appellation "hadha al-rajul" (this man).
This biographical article about a philosopher of Judaism is a stub.