Mufaddal Saifuddin (; Abu Jafar-us-Sadiq Mufaddal Saifuddin) is a claimant to the title of 53rd Da'i al-Mutlaq (highest spiritual authority) of the Dawoodi Bohra. The Dawoodi Bohra are a sub group within the Mustaali, Ismaili Shia branch of Islam. He is currently the Chancellor of Aligarh Muslim University.