Yaakov Yitzchak Rabinowicz (Polish: Jakub Izaak Rabinowicz; 1766–1813), also known as the Yid Hakodosh (Yiddish: ייִד הקדוש; Hebrew: היהודי הקדוש, HaYehudi HaKadosh, "The Holy Jew"), was the founder of the Peshischa (פשיסחא, Yiddish) sect of Hasidism in Przysucha, Poland, which was "an elitist, rationalistic Hasidism that centered on Talmudic study and formed a counterpoint to the miracle-centered Hasidism of Lublin." He held court in the grand synagogue of Przysucha.A disciple of The Seer of Lublin, from whom he broke, and the teacher of Rabbi Simcha Bunim of Peshischa, to whom was passed the helm of his yeshiva, he was also the patriarch of the Biala Hasidic dynasty.