The Ismailis are the second-largest Shi'i community in the world today, settled in over 25 countries across Asia, Africa, the Middle East, Europe and North America. They are the only Muslims to follow a living spiritual guide of their community, the Nizari Ismaili Imam. This book is the first collection of biographies of all the Ismaili Imams, from the seminal Imams of early Shi'i Islam, through to those of the first ‘period of concealment’ when their public identities remained hidden, to the Imam-caliphs of the illustrious Fatimid dynasty, and those of the Alamut period, up to the Aga Khans of the modern period. The Ismaili Imams mines the rich scholarship of the developing field of Ismaili Studies, providing a simple and clear resource for the general reader, as well as a handy reference guide for scholars. This copiously illustrated book offers a snapshot of the lives, events, and legacies of all 49 Imams, and through them, of the Ismaili community’s storied past.