Rav Nachman bar Yaakov (Hebrew: רב נחמן בר יעקב; died 320) was a Jewish Talmudist who lived in Babylonia, known as an Amora of the third generation. It is generally accepted that references to Rav Nachman in the Talmud refer to Rav Nachman bar Yaakov, not to Rav Nachman bar Yitzchak.