The Nawab of Dhaka (Bengali: "ঢাকার নবাব"), originally spelt in English Nawab of Dacca, was the title of the head of largest Muslim zamindar in British Bengal and Assam, based in present-day Dhaka, Bangladesh. The title of nawab, similar to the British peerage, was conferred upon the head of the family by Queen Victoria as a recognition of the first Nawab's loyalty and contribution to the social welfare activities.