Indonesia’s Constitutional Court, Guardian of Indonesia's 1945 Constitution

RRI.CO.ID, Jakarta – The Indonesian Constitutional Court (Mahkamah Konstitusi, MK) is an independent judicial institution established to safeguard the supremacy of the country's 1945 Constitution. It is one of the institutions exercising judicial power in Indonesia and plays an important role in ensuring that laws, state institutions, and political processes remain within constitutional boundaries.

Its establishment was part of Indonesia’s constitutional reforms following the collapse of President Soeharto's New Order era and the beginning of Reformasi ("Reform"). The constitution's Third Amendment, adopted in 2001, became the basis for the court's establishment.

However, the idea of constitutional review in Indonesia has historical roots that predate its establishment. During the debates of the Investigating Committee for Preparatory Work for Independence (BPUPK) in 1945, a national figure, Muhammad Yamin, proposed giving the Supreme Court authority to examine laws against the Constitution, although the proposal was not adopted at the time; the idea gained renewed relevance during the 1999–2002 constitutional amendments.

The Constitutional Court officially came into existence on August 13, 2003, making Indonesia the first country to establish such an institution in the 21st century. The Supreme Court temporarily performed functions associated with constitutional review before the Court became operational.

Under the Constitution, the Court has four main authorities: reviewing laws against the 1945 Constitution, resolving disputes concerning the constitutional authority of state institutions, deciding on the dissolution of political parties, and resolving disputes over general election results. These cases are heard at the first and final instance, meaning that Constitutional Court decisions in its jurisdiction are final.

The Court also has a specific constitutional obligation concerning the country's president and vice president. It must issue a decision on the House of Representatives’ (DPR) opinion on alleged violations of the Constitution by the President and/or Vice President, including certain serious legal violations, disgraceful conduct, or other circumstances in which they no longer meet the constitutional requirements for office.

The Constitutional Court consists of nine constitutional justices, with three nominated by the DPR, three by the President, and three by the Supreme Court. This arrangement is designed to distribute the nomination process among different branches of state power, while the justices exercise judicial authority independently.

The Court’s role is particularly visible during elections because it has constitutional authority to adjudicate disputes over general election results. Such cases can involve disputes over official results of presidential, legislative, and other elections that fall within the constitutional framework, making the Court an important part of Indonesia’s electoral dispute-resolution system.

The Constitutional Court complex is located on Medan Merdeka Barat Street, Central Jakarta, just south of the headquarters of Indonesia's public radio network, Radio Republik Indonesia (RRI) – as well as RRI Voice of Indonesia. Before being situated in the Neo-Classical building, the Court worked in various locations, including the RRI headquarters during the 2024 general election dispute.