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HeinOnline’s World Constitutions Illustrated: January 2026 Update

7 MIN READ

The study of constitutional law depends on access to original texts, amendments, and the historical context that shapes them. HeinOnline’s World Constitutions Illustrated is the most comprehensive resource of its kind, containing current and historical constitutions for every country, along with amending laws, consolidated texts, classic constitutional works, scholarly commentary, and related periodicals. Updated monthly, this ever-expanding database allows researchers to trace the constitutional and political development of nations around the world with both primary documents and carefully curated secondary sources.

In the fall, we highlighted new content added through September 2025. Since then, we’ve continued building on this foundation. Read on to explore the latest updates, which include new constitutional documents for 29 countries and 76 newly added titles.

We will continue to provide constitutional content news right here on the HeinOnline Blog. Be sure to subscribe to receive notifications when new posts are published.

Updates from October 2025 to Date

Azerbaijan

We now include an English translation of the original text of the Constitution of 1995 from the Milli Mejlis.

Flag of Azerbaijan

Bahrain

We have added the following English translations from the Ministry of Legal Affairs:

  • the constitutional amendment of 21 October 2018.
  • the constitutional amendments of 30 March 2017.
  • the constitutional amendments of 3 May 2012.
  • explanatory note of the constitutional amendments of 3 May 2012.
  • the consolidated text of the Constitution of 1973 [2002], as amended to 2018.

We have also added:

  • the English translation of the Constitution of 1973 [2002], as amended to 2018, from the Legislation & Legal Opinion Commission.
  • the Arabic text of the Constitution of 1973 [2002], as amended to 2018, from the Ministry of Legal Affairs.
Flag of Bahrain

Bangladesh

We now include the text of the July National Charter of 2025 in English from the National Consensus Commission and in Bengali from the Office of the Chief Counsel.

Flag of Bangladesh.

Brazil

The Constitution of 1988 was further amended by Constitutional Amendment No. 137 of 2025, which amends Art. 155 of the Federal Constitution to grant immunity from the Tax on Motor Vehicle Ownership (IPVA) to the vehicles it specifies. We have added the amending law in Portuguese from the Chamber of Deputies, Presidency, and the Official Gazette. We have also included the consolidated text, as amended to Constitutional Amendment No. 137, in Portuguese from the Presidency and Chamber of Deputies.

Flag of Brazil.

Chad

The Constitution of 2023 was further amended by Constitutional Law No. 001/PC/2025 of 3 October 2025. We include the text of the amending law in Arabic and French from the Law and Politics in Africa site. We have also added the consolidated text, as amended to 2025, in French from the Presidency.

Flag of Chad

Chile

The Constitution of 1980 was further amended by Law No. 21.773 of 7 October 2025. We have added the text of the amending law in Spanish from the Library of the National Congress and Official Gazette. We also now include the consolidated text, as amended to 2025 [Law No. 21.773], in Spanish from the Library of the National Congress. We have added our own English translation of the consolidated text, updated to 2025.

Flag of Chile

Comoros

We have added the original text of the Constitution of 2018 in French from the Supreme Court.

Flag of Comoros

Cuba

The Constitution of 2019 was amended by the Law of Constitutional Reform of 2025, which removes the 60-year-old age limit for presidential candidates. We now include the text of the amending law in Spanish from the Official Gazette. We have added our English translation of the consolidated text of the Constitution of 2019, as amended to 2025. Additionally, we have added the consolidated text of the Constitution of 2019, as amended to 2025, in Spanish from the Official Gazette.

Flag of Cuba

Cyprus

The Constitution of 1960 was further amended by the Twenty-Second Amendment of the Constitution Law, 2025. We have added the text of the amending law in Greek from the Official Gazette. We also now include the consolidated text, as amended to Law 186(I) of 2025, in Greek from the Cyprus Bar Association. Additionally, we have added the following English texts from the Office of the Law Commissioner:

  • the Twenty-First Amendment of the Constitution Law, 2025.
  • the consolidated text, as amended to Law 130(I) of 2025.
  • the Twentieth Amendment of the Constitution Law, 2025.
Flag of Cyprus

Djibouti

The Constitution of 1992 was further amended by Constitutional Law No. 192/AN/25/9th, 2025. We have added the text of the amending law in French from the Official Gazette.

Flag of Djibouti

Guinea

We have added the text of the Draft Constitution of 2025 in French from the Official Gazette.

Flag of Guinea

Hungary

We have added “Relevant Provisions of the Fifteenth Amendment to the Fundamental Law and Explanatory Report” in English from the Venice Commission. This document details the Fifteenth Amendment to the
Constitution of 2011.

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Lesotho

The Constitution of 1993 was further amended by the Tenth Amendment of the Constitution Act, 2025. We now include the text of the amending law from the Government Gazette.

Flag of Lesotho

Mali

We now include the revised text of the Charter of Transition of 2025, granting a renewable five-year term to the transitional government, in French from the Presidency.

Flag of Mali

Malta

The Constitution of 1964 was further amended by Act No. XXXIX of 2025. We now include the amending law in Maltese and English from the Gazette of the Government of Malta / Parliament.

Flag of Malta

Mauritania

We have added the consolidated text of the Constitution of 1991, as amended to 2017, in Arabic from the National Assembly.

Flag of Mauritania

Mexico

The Constitution of 1917 was further amended by the Decrees of 9 October and 15 October 2025 regarding extortion and the ratification of higher ranks of the National Guard. We have added the texts of the amending laws in Spanish from the Official Gazette. We also now include the consolidated text, updated to 9 October 2025, from the Chamber of Deputies and Electoral Tribunal, and the consolidated text, updated to 15 October 2025, from the Chamber of Deputies and Electoral Tribunal.

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Nauru

We now include the consolidated text of the Constitution of 1968, as amended to 2025, in English from the Government site.

Flag of Nauru

New Zealand

We now include the original text of the Parliament Act of 2025 from the Parliamentary Counsel Office.

We have added reprints from the Parliamentary Counsel Office to the collection of statutory acts governing constitutional matters in New Zealand. We now include the consolidated text of the Public Service Act
of 2020, updated to 27 November 2025; the Crown Entities Act of 2004, updated to 27 November 2025; the Public Audit Act of 2001, updated to 13 November 2025; and the Electoral Act of 1993, updated to 27 November 2025.

We have also added the consolidated text of the Intelligence Security Act
of 2017, updated to 1 October 2025; the Public Finance Act of 1989, updated to 1 July 2025; the Foreign Affairs Act of 1988, updated to 5 April 2023; and the Local Electoral Act of 2001, updated to 12 October 2025.

Flag of New Zealand

Pakistan

The Constitution of 1973 was further amended by the Constitution (Twenty-seventh) Amendment Act of 2025. We now include the text of the amending law from the Official Gazette.

Flag of Pakistan

Papua New Guinea

We now include the Constitution of 1975, as amended to 2025, in English from the Pacific Islands Legal Information Institute.

Flag of Papua New Guinea

San Marino

We have added the Law of Constitutional Revision 26 September 2025 No. 2, amending the Declaration of the Rights of the Citizen and of the Fundamental Principles of the Legal Order of San Marino of 1974, in Italian from the Grand General Council.

Flag of San Marino

Seychelles

The Constitution of 1993 was further amended by Act 6 of 2025. We have added the amending law from the Official Gazette and the consolidated text, as amended to 2025, from the Seychelles Legal Information Institute.

Flag of Seychelles

Slovak Republic

The Constitution of 1992 was further amended by Constitutional Law No. 255/2025 of 26 September 2025. We include the Slovak text of the amending law and consolidated text, as amended to 2025, from the Ministry of Justice/Collection of Laws. We have also added the consolidated text, as amended through June 2023, in English
from the Venice Commission.

Flag of Slovak Republic

Somalia

We now include the following texts from the Parliament: the original Somali text of the Provisional Constitution of 7 September 2012, with 2024 amendments, and the English translation of the consolidated text of the Constitution of 1960, as amended to 1963.

We have also added the following Somali texts from the Parliament:

  • the original text of the Constitution of 2012.
  • the original text of the Constitution of 1979.
  • the original text of the Constitution of 1960.
Flag of Somalia

Switzerland

The Constitution of 1999/2000 was further amended by the amending law passed at the Referendum of 28 September 2025. We have added the text of the amending law in French, Italian, and German from the Federal Gazette.

Flag of Switzerland

Tonga

The Constitution of 1875 was further amended by the Act of Constitution of Tonga (Amendment) Act, 2025 [Act No. 24 of 2025]. We now include the text of the amending law in English and Tongan from the Government.

Flag of Tonga

United Kingdom

We have added the Absent Voting (Elections in Scotland and Wales) Act 2025 (c. 27) to the collection of Laws Concerning Constitutional Matters. We include the text of the law from the Stationery Office. We have also added the Border Security, Asylum and Immigration Act 2025 (c. 31). We include the text of the law from the Stationery Office.

Flag of the United Kingdom

Vietnam

We now include the Vietnamese text of Resolution No. 203/2025/QH15, amending the Constitution of 1992, from LuatVietnam. We have also added the consolidated text, as amended to 2025, in Vietnamese from the National Assembly.

Flag of Vietnam

Stay tuned for our next update!

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