Constitutional Court participates in intensive multilateral international cooperation. It is a full member of the Conference of European Constitutional Courts, the World Conference on Constitutional Justice, and the European Commission for Democracy through Law (the Venice Commission) of the Council of Europe. Within the Venice Commission, the cooperation of the constitutional courts and courts of equivalent jurisdiction of the member states of the Council of Europe is institutionalized. The Constitutional Court also actively participates in the Superior Courts Network, operating under the auspices of the European Court of Human Rights, and the Judicial Network of the European Union that are aimed at exchanging views and considering issues related to the work of constitutional courts. The judges and court personnel participate in numerous international conferences and seminars.
Apart from its multilateral cooperation, the Constitutional Court is also involved in bilateral cooperation with courts in several countries. This bilateral cooperation takes the form of official or study visits of the Constitutional Court judges to the courts of other countries or visits of delegations of the courts of other countries to the Constitutional Court of the Republic of Slovenia. In addition, the Constitutional Court cooperates with the Court of the Justice of the European Union and the European Court of Human Rights and fosters bilateral exchange study visits of the members and legal advisors of the Constitutional Court.