The World Conference on Constitutional Justice (WCCJ) unites 117 constitutional courts and councils and supreme courts in Africa, the Americas, Asia, Australia/Oceania, and Europe.

The main purpose of the WCCJ is to facilitate judicial dialogue between constitutional judges on a global scale. Due to the obligation of judicial restraint, constitutional judges sometimes have limited occasions to conduct a constructive dialogue on constitutional principles in their countries. The exchanges that take place between judges from various parts of the world in the World Conference further reflect on arguments, which promote the basic goals inherent to national constitutions. Even if the texts often differ substantially, discussion on the underlying constitutional concepts unites constitutional judges from various parts of the world committed to promoting constitutionality in their own country.

The Constitutional Court of the Republic of Indonesia already participated at the 1st Congress in Cape Town (2009) and 2nd Congress in Rio de Janeiro (2011). It became an official member of the WCCJ since 2013, after the issuance of Presidential Decree Number 14 of 2013 on the decision of Indonesia's membership in the World Conference on Constitutional Justice.

Since then, the Constitutional Court of the Republic of Indonesia has been contributing as an active member, such as: becoming a member of WCCJ's Bureau from 2015-2017 as President of the Association of Asian Constitutional Courts and Equivalent Institutions (AACC), then being re-elected as representative of Asia/Oceania for 2017-2022 in the WCCJ Bureau.

During the 4th Congress in Vilnius, Lithuania (2017), the Constitutional Court of the Republic of Indonesia proposed a bold statement, which the members unanimously agreed upon to be included in the Vilnius Declaration: "The World Conference deplores any unconstitutional attempt to undermine the rule of law in any country."

Recently, the Constitutional Court of the Republic of Indonesia is elected host for the 5th Congress in 2022 under the theme of "Constitutional Justice and Peace." It reflected an international appreciation of law enforcement, democracy, and human rights by the Court.