The concept of voluntariness permeates the ethics and politics of migration and is commonly used to distinguish refugees from migrants. Yet, neither the precise nature and conditions of voluntariness nor its ethical significance for migrant rights and state obligations has received enough attention. The articles in this collection move the debate forward by demonstrating the complex ethical judgments involved in delineating voluntary from forced migration and in drawing out its political and institutional implications. In addition to highlighting the interplay between the voluntary and nonvoluntary elements of migration over time and across different sites of the migration journey, they provide a nuanced account of the various conditions of voluntariness and they challenge common ideas about its normative political consequences.