If it is true that Spinoza belongs to the history of Jewish Philosophy, his concept of God also cannot cease to being “Jewish”. Our aim here is to call into question if Spinoza’s concept of God, as exposed in Ethics’ definitions, has something of Jewish, particularly when faced with conceptions yielded by some of the main philosophers from Jewish and Arabic traditions: Saadya, Avicenna, Ibn Gabirol, Halevi, Maimonides and Crescas. Our answer, at the end, is negative.