In this paper, the author will identify the position of the Convention for the Protection of Human Rights and Fundamental Freedoms in the nomenclature of legal regulations of the Republic of Croatia and make a comparison with the Constitution of the Republic of Croatia itself. Other aspects of the Convention for the Protection of Human Rights and Fundamental Freedoms will also be defined. Furthermore, he will interpret the right to a fair trial in a historical context, thus touching upon the Habeas Corpus Act, as well as Due Process according to the US Constitution. The normative content of the right to a fair trial will be presented in accordance with the Constitution of the Republic of Croatia, and its tacit rights, shortcomings and key articles related to the topic of this paper will be mentioned. It will be defined by the very appearance of a fair trial, as well as the concept of civil rights and obligations in the context of the right to a fair trial. The work of the Constitutional Court, the guarantee of a fair trial in an administrative dispute and the principle of equality of arms as well as the adversarial procedure will be presented. In addition to describing the work and practice of the European Court of Human Rights, the right to an independent and impartial court, the right to access the court and the right to a trial within a reasonable time will also be discussed. Then there will be talk about the ineffectiveness of legal means to protect the right to a trial within a reasonable time, as well as enforcement procedures. Then, the very consequences of exceeding a reasonable time limit and the length of the administrative procedure will be elaborated, as well as damages in the event of a violation of the right to a fair trial, and at the very end, military courts and courts for national security in the context of the right to a fair trial itself.