Over the past several decades, scholars of medieval and early modern Iberia have transformed the study of the region into one of the most vibrant areas of research today. This volume brings together twelve essays from a diverse group of international historians who explore the formation of the multiple and overlapping identities, both individual and collective, that made up the Iberian peninsula during the eleventh through seventeenth centuries. Individually, the contributions in this volume engage with the notion of identity in varied ways, including the formation of collective identities at the level of the late medieval city, the use of writing and political discourse to construct or promote common political or socio-cultural identities, the role of encounters with states and cultures beyond the peninsula in identity formation, and the ongoing debates surrounding the peninsula's characteristic ethno-religious pluralism.Collectively, these essays challenge the traditional dividing line between the medieval and early modern periods, providing a broader framework for approaching Iberia's fragmented yet interconnected internal dynamics while simultaneously reflecting on the implications of Iberia's positioning within the broader Mediterranean and Atlantic worlds.