OBERNIK, JUDAH (d. c. 1520), talmudist, rabbi of Mestre. Judah was a pupil of Israel Isserlein whose rulings and expositions, both heard directly and reported by others, he entered in his notebook, along with rulings of Jozman Katz, responsa of Sar Shalom of Vienna, expositions of Jacob *Moellin, glosses on the Tashbaẓ (Cremona, 1556) by *Perez b. Elijah of Corbeil and other material. *Joseph b. Moses, Judah Obernik's pupil, made abundant use of this notebook in his work Leket Yosher (ed. by J. Freimann, 2 vols., 1903–4), which he quotes at length. He conducted a halakhic correspondence with Isserlein and engaged in learned discussions with Judah *Muenz and Joseph *Colon. He was also the author of Seder Pesaḥ.
Joseph b. Moses, Leket Yosher, ed. by J. Freimann, 2 (1904), xxx–xxxi.