The right to a fair trial in an administrative dispute is guaranteed by Article 29, Paragraph 1 of the Constitution of the Republic of Croatia, and Article 6, Paragraph 1 of the (European) Convention for the Protection of Human Rights and Fundamental Freedoms. It is a matter of procedural law, which essentially consists of several concrete (tacit and explicit) rights and guarantees, the protection of which is primarily the responsibility of the European Court of Human Rights, whose judgments are legally binding on the members of the Convention. The elements of procedural fairness in an administrative dispute in their synergy contribute to legal certainty and the rule of law as imperatives of democratic societies. National administrative courts should resolve administrative disputes by interpreting national legislation in accordance with Convention law, i.e. the jurisprudence of the European Court of Human Rights. The jurisprudence of the European Court of Human Rights is an independent legal system concerning national legal systems, and it contains the core of the judge's opinion on a specific issue that can be brought under the public interest. By considering the meritorious practice of the European Court of Human Rights, the conclusion is imposed that the largest share of proceedings initiated against the Republic of Croatia relate to the violation of the right to a fair trial, namely the violation of the right to a trial within a reasonable time, so further efforts to harmonize the Croatian legal order and the judiciary are necessary with certain elements of fair trial and jurisprudence of the European Court of Human Rights.