Shah Sultan Ahmad Nanupuri (Bengali: শাহ সুলতান আহমদ নানুপুরী; 26 June 1914 – 16 August 1997), also known by his daak naam Badshah, was a Bangladeshi Islamic scholar, teacher and author. He established numerous madrasas in Bangladesh and was the founding principal of Al-Jamiah Al-Islamiah Obaidia Nanupur for seventeen years.