The situation of internally displaced persons (IDPs) has been a matter of international concern (and legal debate) since at least the late 1990s and early 2000s, and its salience has only risen in the context of extreme weather events produced by intensifying climate change. Yet political philosophy has barely touched on this issue, despite its close connection to, and potential significance as a site of reflection on, lively and expansive debates on migration, refugees, territorial rights, state sovereignty, and climate change. The aim of this volume is to highlight the salience of the phenomenon of internal displacement to these wider debates and to set the philosophical agenda for articulating a political ethics of internal displacement.