Thesis is the Organization of state power in the Republic of Croatia. The work is thematically divided into four parts. The first part will be explained by state organizations and authorities in the Republic of Croatia, the authority of the state organization and integration of national policy, as well as the sovereignty of state power and its division. The second part of the details of the Constitution, its basic provisions, as well as the values of the constitutional order and the personal and political freedom and rights. At the end of the second part explains the changes in the Constitution. Furthermore, the third section outlines the functions of the Government of the Republic of Croatia, present by the President, Chief Cabinet Minister, said all of the Government to date and explains the relationship between the Government and the Parliament. Finally the fourth section presents the structure of state power in the Republic of Croatia. The details of the separation of powers, ie the legislative, executive and judicial power in the Republic of Croatia. Furthermore, it displays all the powers of the Constitutional Court and the State Attorney's Office.