The crime of aggravated murder is one of the most serious crimes for which the legislator provides the most severe punishments. Aggravated murder has qualifying features, ie it is defined by aggravating circumstances that the legislator regulates with the Criminal Code, which sets the framework within which judicial bodies that act against perpetrators of criminal acts operate. The criminal offense of aggravated murder is considered murder in a cruel or insidious manner, murder of a person vulnerable due to his or her age, physical or mental disability or pregnancy, murder of a person previously abused by the perpetrator, murder motivated by low motives, murder the killing of an official in connection with the performance of his official duties. These forms of the criminal offense of aggravated murder are supported by examples from court practice on the basis of which we gain insight into the actions of judicial bodies towards the perpetrators of the criminal offenses of aggravated murder. Comparing the legal regulations of other countries, it is evident that through many similarities and differences with the legal regulations of the Republic of Croatia, they are trying to achieve the same effect and reduce the percentage of aggravated murders.