Exceptional times call for exceptional measures - this formula is all too familiar in the domestic setting. Governments have often played loose with their state's constitution in the name of warding off an urgent threat. But after decades of increasing interconnectedness and emerging transnational governance, today one sees new forms of emergency politics that are cross-border in range. From the European Union to the World Health Organization, from supranational institutions to state governments acting in concert, the logic of emergency is embraced in international contexts, with Covid-19 the latest occasion. This Forum offers an entry-point into this emerging phenomenon. Taking as its point of departure two recent books, it examines the origins, forms, effects and normative stakes of emergency politics beyond the state. Among the matters discussed are the concept of emergency politics, the historical context of its contemporary forms, the patterns of decision-making associated with it, the implications for the legitimacy of transnational institutions, and the constitutional and political ways in which it might be contained. Transnational emergency politics seems likely to remain a central feature of the coming years, and our aim is to further its study in international relations.