Joseph ben Jakob Ibn Saddiq (in Arabic: Abū ʿUmar Yūsuf Ibn Ṣadīq) was a Judeo-Arabic rabbinic judge, poet, and philosophical writer who lived in the first half of sixth/twelfth century in al-Andalus. Information about his life and works is scarce; all that is known is that he was in contact with his compatriot the Jewish author Judah ha-Levi (477-535/1085-1141), and possibly with another Spanish Judeo-Arabic philosopher, Moses Ibn ʿEzra (c.446-529/1055-1135). In 532/1138 he became a rabbinic judge