Zahir al-Dawla Vushmgir was the second Ziyarid emir who ruled from 935 until his death in December 967. He was a son of Ziyar. Voshmgir means "quail catcher" in the local Caspian Iranian dialects.

Upon Vushmgir's death in 967, his eldest son Bisutun marched to the capital Gurgan to take control of the Ziyarid state. A Samanid army that had arrived shortly before Vushmgir's death for a joint cam