This book is as an effort to reveal the history of the spread and development of Islam in Philippines, Myanmar, and Thailand The history of Islam entrance and development in the Indonesian Archipelago or in a region now called Southeast Asia has always been an interesting topic to discuss. An agreement has not been reached on the history of lslam entrance to this region, primarily on the period, the preacher, the first area embracing slam, and the Islamization process. Meanwhile, in relation to its development, many themes leave various questions unanswered. For example, from the political aspect, when lslam community in this region gained political power turning into a "Country", which areas gained such political power and what the power form was; how the power was gained and what is the correlation pattern between various areas with such political power, and other aspects. All of the above will be answered in this book.