Short answer. Ahura Mazda ("Wise Lord," from Avestan ahura, "lord," and mazda, "wisdom") is the supreme God of Zoroastrianism. In the Gathas of the prophet Zarathushtra he is the wholly good creator of an ordered, good world, the source of asha (truth/right-order), who asks each person to choose his side against the Lie. Scholars debate whether the tradition is strict monotheism or ethical dualism.
The "Wise Lord": what the name actually means
The name is a description, not a label. Ahura means "lord" and Mazda means "wisdom" or "mind," from a Proto-Indo-Iranian root (cognate to Vedic medhā, "intelligence"), so the deity is literally "the Lord Wisdom" or "Wise Lord." In the oldest layer, the Gathas (the seventeen hymns Zoroastrians attribute to the prophet Zarathushtra himself), Ahura Mazda is addressed directly and intimately as the maker of the good things of life: light, the earth, the cattle, the moral mind (Yasna 44, a hymn built of "Who...?" questions to Mazda). Mary Boyce, the foremost modern historian of the religion, stresses that for Zarathushtra this God was a genuinely transcendent creator and not merely the chief of a pantheon (Zoroastrians, 1979). Later Pahlavi texts contract the name to Ohrmazd. The point worth holding: in this tradition, the supreme reality is named for wisdom, and the good world is his deliberate work, a creation that is, from the start, on the right side.
The Amesha Spentas: how the Wise Lord acts
Ahura Mazda is not a lone monad; he works through the Amesha Spentas, the "Bounteous (or Holy) Immortals", usually counted as six divine aspects surrounding him, sometimes seven when Mazda's own holy spirit, Spenta Mainyu, is included. They are at once attributes of God and beings you can address: Vohu Manah (Good Mind/Purpose), Asha Vahishta (Best Truth/Right-order), Khshathra Vairya (Desirable Dominion), Spenta Armaiti (Holy Devotion), Haurvatat (Wholeness) and Ameretat (Immortality). Boyce reads them as the means by which the one God's goodness reaches into the material world, each linked to a part of creation (A History of Zoroastrianism, Vol. I, 1975); Almut Hintze and Prods Oktor Skjærvø treat them as the structured way the Gathas describe Mazda's mind made active. The crucial feature for comparison: these are not rival gods but God's own qualities, closer to a participatory unfolding of one divine life than to a polytheon. To pursue the Good Mind or to live in Devotion is, in this frame, to share in the very being of the Wise Lord.
Asha vs. druj: a good God, a real choice
What makes Ahura Mazda distinct is the moral architecture under him. The cosmos runs on asha (truth, right-order, the way things ought to be) and its enemy is druj, the Lie, disorder. Yasna 30, one of the central Gathic hymns, frames existence as two primal "spirits" or mentalities, "the better and the bad," who chose at the beginning: one chose right-order, the other the Lie (Yasna 30.3-30.5). Read carefully, the conflict is not Ahura Mazda versus an equal anti-god; it is Mazda's holy spirit (Spenta Mainyu) against the hostile spirit (Angra Mainyu), with humans summoned to choose between them (Yasna 30, 45). This is why scholars debate whether Zoroastrianism is "monotheism" or "dualism", and why Boyce described it, in effect, as a monotheism carried by a strongly dualist cosmology. The creator is unambiguously good; evil is a real, opposing will, not a shadow cast by God. That single move (a good God who did not make evil, and a world that is therefore worth fighting for) is the tradition's signature, and it is participatory at its root: you are not a spectator but a co-defender of the good creation. Norman Cohn made this the spine of his account of how Western expectation of a final triumph of good took shape (Cosmos, Chaos and the World to Come, 1993).
Ahura Mazda and YHWH: resonance, not proven borrowing
Readers from biblical traditions notice the overlaps fast: a sovereign creator who makes a world and calls it good (Genesis 1); a deity whose name resists images; an order of "right-order" you are commanded to keep. There are real structural rhymes, a supreme good creator, an organized host of divine "aspects," a cosmos morally polarized toward a good end. But this is resonance you can lean on, not influence you can bank. The Hebrew Bible's own theology is emphatic that one God forms both light and darkness (Isaiah 45:7), a deliberately *anti*-dualist line, pulling the opposite way from Zoroastrian cosmology even where the language sounds parallel. The honest historical situation is contact without a paper trail: Judeans lived under Achaemenid Persian rule for two centuries, and Albert de Jong (Traditions of the Magi, 1997) has shown how thin and late much of our actual evidence for Magian doctrine is, which counsels caution against tidy "borrowing" stories. So: the figures illuminate each other; neither is proven to have produced the other. The Wise Lord is best understood on his own terms first, and only then placed, carefully, beside his neighbors.
Common questions
What does the name "Ahura Mazda" mean?
The name is a description, not a label. Ahura means "lord" and Mazda means "wisdom" or "mind," from a Proto-Indo-Iranian root cognate to Vedic medhā, "intelligence," so the deity is literally "the Lord Wisdom" or "Wise Lord." In this tradition the supreme reality is named for wisdom, and the good world is his deliberate work. Later Pahlavi texts contract the name to Ohrmazd.
Is Ahura Mazda the same as Ohrmazd?
Yes. Ohrmazd is the contracted form the name takes in the later Pahlavi (Middle Persian) texts. It refers to the same supreme God, the Wise Lord of the Gathas.
Is Zoroastrianism monotheist or dualist?
Scholars genuinely debate this. The creator is unambiguously good and works through the Amesha Spentas, which are not rival gods but God's own qualities, closer to a participatory unfolding of one divine life than a polytheon. Yet the cosmos runs on asha (right order) against druj (the Lie), and Yasna 30 frames existence as two primal spirits who chose at the beginning. Read carefully, the conflict is Mazda's holy spirit (Spenta Mainyu) against the hostile spirit (Angra Mainyu), not Ahura Mazda versus an equal anti-god, which is why Boyce described it, in effect, as a monotheism carried by a strongly dualist cosmology.
Is Ahura Mazda the same as the God of the Bible?
This is resonance you can lean on, not influence you can bank. Readers notice real structural rhymes: a sovereign good creator who makes a world and calls it good, a deity whose name resists images, an order you are commanded to keep. But the Hebrew Bible is emphatic that one God forms both light and darkness (Isaiah 45:7), a deliberately anti-dualist line pulling the opposite way even where the language sounds parallel. The honest situation is contact without a paper trail: the figures illuminate each other, but neither is proven to have produced the other.
This page identifies Ahura Mazda and his structure (Wise Lord, Amesha Spentas, asha against the Lie) and marks the line between genuine cross-cultural resonance and unproven historical borrowing. It settles who he is in his own tradition; it does not settle what later monotheisms owe him.
Sources
Yasna 30 (esp. 30.3-30.5), Yasna 44, Yasna 45, Yasna 47.3 (Gathas / Avesta); the Bundahishn; Genesis 1; Isaiah 45:7. Mary Boyce,* Zoroastrians: Their Religious Beliefs and Practices (1979) and A History of Zoroastrianism*, Vol. I (1975); Jenny Rose,* Zoroastrianism: An Introduction (2011); Prods Oktor Skjærvø and Almut Hintze on the Gathas; Albert de Jong, Traditions of the Magi (1997); Norman Cohn, Cosmos, Chaos and the World to Come *(1993).