ENThis paper serves few purposes. First, it examines the principles of public administration in Lithuania. Good administration principle is analysed as constitutional principle relying on the case law of the Supreme Administrative Court of Lithuania. Second, it explores impact of the decisions of Constitutional Court of the Republic of Lithuania to the contemporary judicial review of Lithuanian administrative courts. Therefore, one of the latest rulings of the Supreme Administrative Court of Lithuania related to the spelling of names and family names in the passports of citizens of the Republic of Lithuania will be reviewed.