Religion is becoming increasingly important to the study of political science and to re-examine key concepts, such as democracy, securitization, foreign policy analysis, and international relations. The secularization of Europe is often understood according to the concept of ‘multiple modernities’—the idea that there may be several roads to modernity, which do not all mean the eradication of religion. This framework provides support for the view that different traditions, societies and groups can come to terms with the components of modernity (capitalism, democracy, human rights, science and reason) while keeping in touch with their religious background, faith and practice. Contributors examine the interaction between EU-integration processes and Western European countries, such as Belgium, France, Luxembourg, Austria, Scandinavia, Italy, and the UK, and shine fresh light on the economic and cultural contexts brought about by relationships between politics and religion, including immigrant religions and new religious movements. This volume combines theoretical perspectives from political sociology and international relations to consider the role of religion as a source of power, identity and ethics in institutions and societies. Politics of Religion in Western Europe will be of interest to scholars of politics, religion, the European Union and political sociology.