Kasim Khan Zainuddin
Syedna Kasim Khan Zainuddin was the 31st Dai of Dawoodi Bohra. He succeeded the 30th Dai Ali Shamshuddin to the religious post.
Zainuddin became Da'i al-Mutlaq in 1056 AH/1646 AD. His period of Dawat was 1042–1054 AH/1634–1646 AD.
Syedna Kasim Khan's ancestry is traced back to Maulaya Abdullah and Syedi Hasan Feer. He served five of his predecessors. He is buried in Mazare Qutbi in Ahmedabad.