The Institute of Ismaili Studies (IIS) is a research institute in London, United Kingdom. It aims to promote the study of Muslim cultures and societies, both historical and contemporary, in order to foster a greater understanding of their relationships with other societies and faiths. It also functions as a gathering point for the Ismaili community as it endeavors to understand its own history and thought, including the often neglected fields of esoteric Islam and Shi‘ism.