This book examines the constitutional history of Transylvania, a region of Central Europe that has experienced a compelling series of historical events and been governed by a variety of ancient, medieval, and modern entities, as well as its own peoples, who from time to time have jointly or separately exercised their right to self-governance. The book’s main goal is to provide, for the first time in English, a comprehensive source for those interested in the variety of states, constitutional and public legal orders which have succeeded one another during Transylvania’s tumultuous history. It serves to underline the region’s uniqueness as a space where (for better or worse) several nationalities, multiple religions and varied cultures have had to find a way to get along, under the pressures of external state and constitutional orders. It seeks to show both the positive and the negative solutions found, which advanced or hindered this goal of organised coexistence.