This book brings together recent developments in modern migration theory, a wide range of sources, new and old tools revisited (from GIS to epigraphic studies, from stable isotope analysis to the study of literary sources) and case studies from the ancient eastern Mediterranean that illustrate how new theories and techniques are helping to give a better understanding of migratory flows and diaspora communities in the ancient Near East. A geographical gap has emerged in studies of historical migration as recent works have focused on migration and mobility in the western part of the Roman Empire and thus fail to bring a significant contribution to the study of diaspora communities in the eastern Mediterranean. Bridging this gap represents a major scholarly desideratum, and, by drawing upon the experiences of previously neglected migrant and diaspora communities in the eastern Mediterranean from the Hellenistic period to the early mediaeval world, this collection of essays approaches migration studies with new perspectives and methodologies, shedding light not only on the study of migrants in the ancient world, but also on broader issues concerning the rationale for mobility and the creation and features of diaspora identities.