The Introduction to the Routledge Handbook on Extraterritorial Human Rights Obligations (ETOs) notes the developments that have taken place in the ten years since the adoption of the Maastricht Principles on Extraterritorial Obligations in the Area of Economic, Social, and Cultural Rights (Maastricht Principles) that have strongly challenged the territorial paradigm traditionally underpinning human rights law and situates the volume within these developments. It then introduces the various sections and contributions in the volume spanning the themes of conceptualisation and theoretical foundations; enforcement, migration, and refugee protection; financial assistance and sanctions; finance, investment, and trade; and peace and security. The Research Handbook's chapters take stock of the developments in ETOs in relation to different facets of these thematic areas and propose ways forward.