This contribution examines the compatibility of mandatory vaccination with the European Convention on Human Rights (ECHR) through an analysis of the relevant ECHR rights and related case law of the European Court of Human Rights (ECtHR). By focusing on Article 8 (Right to Private Life), Article 2 (Right to Life) and Article 9 (Freedom of Thought, Conscience and Religion) ECHR, we formulate conditions under which mandatory vaccination legislation is justified. With that, this analysis aims to provide national legislators with guidance on responsible legislative policy. Additionally, this article discusses the legal framework underlying the Dutch vaccination policy, including developments therein since COVID-19. Furthermore, the role of the European Union in the context of vaccination is briefly discussed. The importance of an extensive societal and parliamentary debate before implementing a mandatory vaccination policy is stressed, as is the need for proportionality in enforcement.