ENOn 18 January 2022, the parliament of Lithuania adopted the law on writing personal names in the official documents. Having substantially liberalised the existing practice, the law, however, offered only a partial solution because it did not sanction the use of non-Lithuanian diacritical characters. Based on the relevant legal, linguistic and historical contexts, relevant Lithuanian legislation and case law, this study analyses the evolution of Lithuania’s approach towards the writing of its citizens’ personal names in official documents. The text shows that the significant changes that took place in Lithuanian society during the last 30 years have resulted in a partial liberalisation of these practices. The recent case law suggests that the state is on the verge of accepting full liberalisation, particularly if relevant interwar legislation and a broader understanding of historical traditions of the Lithuanian language will be taken into account. However, the Constitutional Court plays a key role in determining the contents and directions of this process. Keywords: Lithuania, national minorities, equality, language rights, constitutional doctrine. [From the publication]