__Abstract__ This article aims to answer the question of whether duties of reasonable accommodation on the basis of religion can and should be identified by the European Court of Human Rights. Throughout the article, it is emphasised that duties of reasonable accommodation are ultimately about realising equal opportunities and thus substantive equality by levelling out the playing field and evening out barriers to full participation. Duties of differential treatment under the prohibition of discrimination and the prohibition of indirect discrimination are both general in application and, arguably, provide a solid basis for duties of reasonable accommodation, including those relating to religion. Consequently, it is argued that identifyin...