This diploma paper is about the Constitutional Court of the Republic of Croatia, its history, acts governing its operation, its organization, authorities and duties, jurisdiction, which is exhaustively determined by the Constitution of the Republic of Croatia, the procedures implemented and governed by the Constitutional act on the Constitutional Court and the recent crisis which the Constitutional court had suffered due to the non-election of judges.Constitutional Court of the Republic of Croatia is the highest constitutional authority of the Republic of Croatia, which guarantees respect and implementation of the Constitution of the Republic of Croatia. The Constitutional Court can be defined as a special constitutional body that is independent from the other branches of state power and is not jurisdiction court, and his actions are based on the regulations of the Constitution of the Republic of Croatia and the Constitutional act on the Constitutional Court of the Republic of Croatia.The Constitutional Court consists of thirteen judges elected by the Croatian Parliament at the proposal of the Committee for the Constitution, and political system for which is needed two-thirds majority vote of all the members, for a term of eight years and there is nolimitation of re-election.The jurisdiction of the Constitutional Court is exhaustively determined by the Constitution of the Republic of Croatia, and procedures of the Constitutional Court which are carried out on the basis of specified responsibilities prescribed by the Constitutional act of the Constitutional Court.In conclusion, the Constitutional Court is the most important institution of protection of constitutional rights and liberties in a modern democratic society, he is providing political balance between the legislative, executive and judicial powers, which these bodies cannot provide by mutual interaction, but are in need of institutional control of the constitutionality of their actions through a special constitutional body.