This collection of articles addresses the interconnections between punishment, citizenship and identity. As immigration and crime control measures have intersected, prisons in a number of countries have ended up housing a growing population of foreign-national offenders and immigration detainees. It is somewhat surprising that criminologists have traditionally spent so little time exploring the relationship between the prison and national identity. With notable exceptions, scholars almost universally treat the prison as an institution bounded by and within the nation-state. This special issue seeks to disrupt that convention of prison studies and criminology more broadly. Focusing on the incarceration of foreign-nationals in diverse contexts, the contributions to this issue collectively argue that the prison is a projection of national sovereignty and an expression of state power. It is also a concrete space where global inequalities play out. When considered through the lens of citizenship, our understan...