Ghiasetdin (Tatar: Ğiäsetdin) (? –1438 or 1445), was a ruler of Kazan (Ghiasetdin Ulus) from the 1420s. He was a son of Khan Shadibak (or a son of Jalal ad-Din). After the death of Idegay in 1419 he usurped the throne of the Kazan Duchy . He also struggled against Olug Moxammat Khan for the leadership of the Golden Horde, and died in this struggle.
