Islam has revolution the world and sons of Islam have changed the world scenario, to a great extent: Followers of Islam or Muslims have scaled new and newer heights in all fields, e.g., expeditions science education, art and culture. Truly speaking, Islam has made this world far more civilized, than it was, when this faith dawned on the earth. the Golden Age of Islamic Civilization refers to the period, between 8th and 15th centuries. During that period, many a significant advancement were made by Muslim scientists. That is why, the sciences of the period are sometimes referred to as Arabic Sciences. On the other hand, Western Science began to develop, quite later. These towering figures can be grouped into various heads for the ease of study and analysis; Religion, Spirituality, Philosophy, Science and Technology, Medicine, Trade and Business, Psychology, Art and Culture, Literature, Sports and so on. In fact in every walk of life, Muslims have made a prestigious and glorified success. Present work, Biographical Encyclopaedia of Islam, is a dynamic attempt in the same direction. Maximum number of celebrities and contributors to Islamic civilization have been included, to make it a compact and comprehensive reference tool, for academics, scholars, researchers , students and general readers. it would prove to be an asset for all of them.