Since its very establishment in 1993, the Constitutional Court has been developing cooperation with constitutional courts of other states, international organisations, and international courts; it is an active member of international community. The dialogue taking place among the justices of constitutional courts during bilateral and multilateral meetings, international conferences, and other events is useful in strengthening the interrelations of constitutional justice institutions and in improving the qualifications of justices, and the acquired experience that is shared is in the activities of the Constitutional Court.
The Constitutional Court has particularly friendly ties with the constitutional justice institutions of neighbouring states—the Constitutional Tribunal of the Republic of Poland and the Constitutional Court of the Republic of Latvia. The bilateral cooperation of the Constitutional Court with these constitutional courts is unique and, at a global level, is presented as an example of cooperation among constitutional courts to be followed. The annual bilateral conferences of judges are particularly useful, since the constitutional courts of neighbouring states face similar legal problems and, by sharing experiences, the solutions are found and the constitutional doctrine is developed.
In international cooperation over the last few years, the Constitutional Court of Lithuania gave priority to cooperation with the constitutional courts of the Eastern Partnership countries of the European Union. In order to raise this cooperation to an even higher level, the Association of Constitutional Justice of the Countries of the Baltic and Black Sea Regions was established.