Joseph ben Solomon Ṭaiṭazaḳ (Hebrew: יוסף בן שלמה טאיטאצק), also referred to by the acronym MahaRITaTS, was a talmudic authority and kabalist who lived at Salonica in the 15th and 16th centuries. He was a member of the Taitazak family.
With his father and brother Judah ben Solomon Taitazak, he moved in 1492 from Spain, his native land, to Salonica, where he became a rabbi.