This edited volume investigates for the first time the impact of conspiracy theories upon the understanding of Europe as a geo-political entity as well as an imagined political and cultural space. Focusing on recent developments, the individual chapters explore a range of conspiratorial positions related to Europe. In the current climate of fear and threat, new and old imaginaries of conspiracy such as Islamophobia and anti-Semitism have been mobilised. A dystopian or even apocalyptic image of Europe in terminal decline is evoked in Eastern European and particularly by Russian pro-Kremlin media, while the EU emerges as a screen upon which several narratives of conspiracy are projected trans-nationally, ranging from the Greek debt crisis to migration, Brexit and the COVID-19 pandemic. The methodological perspectives applied in this volume range from qualitative discourse and media analysis to quantitative social-psychological approaches, and there are a number of national and transnational case studies. This book will be of great interest to students and researchers of extremism, conspiracy theories, and European politics.