Yiḥyah Qafiḥ (Hebrew: רבי יחיא בן שלמה קאפח‎; Arabic: يحيى القافح‎ also known as Yiḥyah ibn Shalomo el Qafiḥ and as Yahya Kapach (his Hebrew name)) (1850–1931), known also by his term of endearment "Ha-Yashish" (English: "the Elder"), served as the Chief Rabbi of Sana'a, Yemen in the late nineteenth and early twentieth centuries. He was one of the foremost rabbinical scholars in Sana'a during that period, and one who advocated many reforms in Jewish education. Besides being learned in astronomy and in the metaphysical science of rabbinic astrology, as well as in Jewish classical literature which he taught to his young students.