Constitutions come in many forms, and looking at real examples of constitutions from around the world is the fastest way to see how differently societies build their legal foundations. Some are single documents of a few thousand words; others sprawl across hundreds of articles or exist only as a collection of statutes, court rulings, and customs. A few date back centuries. Others were drafted within living memory after a war or a revolution. The examples below cover national constitutions written and unwritten, state constitutions within a federal system, and historical documents whose ideas still shape modern law.
National Constitutions Written as a Single Document
The United States Constitution is the most widely studied example of a codified national constitution. Its seven original articles created the legislative, executive, and judicial branches, defined how states relate to one another, and set out how the document itself can be changed. Twenty-seven amendments have been added since ratification in 1788.1Congress.gov. U.S. Constitution – The Preamble At roughly 7,500 words including those amendments, it is short by modern standards, which is one reason courts play such a large role in deciding what its broad language means in specific cases.
India’s Constitution sits at the opposite end of the scale. With nearly 450 articles and 12 schedules, it is the longest written constitution of any sovereign nation. Where the American document leaves many details to legislation and interpretation, India’s framers wrote administrative structures, minority protections, and the division of power between the central and state governments directly into the text. The document took effect in 1950 and has been formally amended more than a hundred times.
South Africa’s Constitution, adopted in 1996 after apartheid, is often cited as one of the most progressive constitutional texts in the world. Its preamble explicitly acknowledges the country’s past injustices and commits to democratic values and human rights.2South Africa Department of Justice. Constitution of the Republic of South Africa, 1996 Its Bill of Rights protects an unusually wide set of rights, including housing, healthcare, food, water, social security, and education, and binds all organs of state. A dedicated Constitutional Court holds exclusive power to rule on whether legislation and even constitutional amendments are valid.3Constitutional Court of South Africa. Role of the Constitutional Court
Germany’s Basic Law, adopted in 1949, contains a feature found in few other constitutions. Article 79 permanently forbids any amendment that would alter the country’s democratic and federal structure, the division of power among its states, or the principles of human dignity and individual rights in Articles 1 and 20.4Federal Ministry of Justice (Germany). Basic Law for the Federal Republic of Germany The framers, writing after a dictatorship had legally dismantled democracy, wanted to make sure no future government could use the amendment process to do the same. The Basic Law also enshrines a right of resistance: all citizens may resist anyone seeking to abolish the constitutional order when no other remedy is available.
Japan’s Constitution, promulgated in 1947 during the Allied occupation, is best known for Article 9. In it, the Japanese people “forever renounce war as a sovereign right of the nation and the threat or use of force as means of settling international disputes,” and land, sea, and air forces “will never be maintained.”5House of Representatives of Japan. The Constitution of Japan In practice, Japan maintains a Self-Defense Force, and the gap between the text and that reality has been one of the most debated constitutional questions in postwar Japan. The document has never been formally amended.
Countries Without a Single Written Constitution
Not every nation packs its constitutional rules into one document. In some countries, those rules are spread across statutes, court decisions, and long-standing customs. The absence of a single text does not mean these systems lack constitutional principles. It usually means those principles are easier for the legislature to change.
The United Kingdom is the leading example. There is no document titled “The British Constitution.” Constitutional authority instead comes from a patchwork of sources. The Bill of Rights 1689 established parliamentary sovereignty and limited the monarch’s ability to suspend laws or levy taxes without Parliament’s consent.6UK Parliament. Bill of Rights 1689 The Human Rights Act 1998 later incorporated the European Convention on Human Rights into domestic law. UK courts, however, cannot strike down legislation. A court that finds a statute incompatible with protected rights can only issue a “declaration of incompatibility.” The law stays in force unless Parliament changes it.
New Zealand works in a similar way. The Constitution Act 1986 is the principal formal statement of the country’s constitutional arrangements, but it does not sit above ordinary legislation.7The Governor-General of New Zealand. The Constitution of New Zealand Parliament could amend or repeal it by a simple majority. The Bill of Rights Act 1990 protects civil liberties but expressly provides that no court shall decline to apply a statute because it is inconsistent with the Bill of Rights.8Courts of New Zealand. The Challenges and Possibilities of Common Law Constitutionalism Constitutional protection in New Zealand depends heavily on political culture and convention.
Israel offers a third variation. Rather than one document, the Knesset has gradually enacted Basic Laws since 1950, each meant to become a chapter of an eventual constitution.9Knesset. Basic Laws These cover the Knesset, the judiciary, human dignity and liberty, and other core subjects. Whether the Basic Laws actually outrank ordinary legislation is disputed. Some argue they do because the Knesset acts as a constituent assembly when passing them. Others point out that most Basic Laws pass by an ordinary majority, which makes it hard to claim superior status.10Knesset. Basic Laws of the State of Israel The question has driven major political conflicts in recent years.
State Constitutions in a Federal System
Constitutions also exist below the national level. Every U.S. state has one, and these documents establish local government structure, protect individual rights, and set policy on education, taxation, and law enforcement. State constitutions operate independently of the federal Constitution, though they cannot take away rights the federal document guarantees. They can grant broader protections.
The Alabama Constitution is the outlier. At more than 376,000 words, it is the longest active constitutional document in the United States, and possibly the world.11Public Affairs Research Council of Alabama. The Nation’s Longest Constitution Just Got Longer Much of that length comes from amendments dealing with local matters like individual county budgets and infrastructure projects. Compared to the federal Constitution’s broad language, Alabama’s text reads more like an accumulation of exceptions built up over more than a century.
California’s Constitution goes long for a different reason. It builds direct democracy into the state’s structure, letting voters bypass the legislature and amend the constitution through the initiative process. A proposed amendment requires roughly 585,000 valid signatures to reach the ballot, and passage requires only a simple majority of votes cast on the measure.12UC Berkeley School of Law. California Constitutional Law: Direct Democracy The result is a constitution shaped as much by voters as by legislators, and it currently ranks as the seventh-longest state constitution in the country.
Historical Documents That Shaped Modern Constitutions
Modern constitutions did not appear from nowhere. They grew out of centuries of attempts to limit rulers and put governance on predictable footing.
The Statutes of San Marino, first published around 1600, are among the oldest written constitutional documents still in force. They organize the microstate’s governance through a series of books covering legal sources and institutions, and after centuries of incremental amendment they remain the core of San Marino’s legal system.13Parliament of Thailand Library. San Marino – Constitution Unusually for a Mediterranean country, San Marino’s legal system functions much like a common law system, relying on these statutes and on judicial precedent rather than modern comprehensive codes.
The Magna Carta of 1215 was not itself a constitution, but it planted ideas that became constitutional bedrock. By forcing King John to accept written limits on royal authority, the barons who drafted it introduced the principle that even a monarch must operate within legal boundaries and laid early groundwork for due process. Today, only three clauses from the 1297 version remain in force in English law: the freedom of the Church of England, the ancient liberties of the City of London, and a right to due legal process.14House of Commons Library. Magna Carta: Does It Still Matter? Its wider influence, though, reached across the English-speaking world and helped establish the enduring idea that government power should be defined and constrained by written agreement.15UK Parliament. The Contents of Magna Carta
How These Examples Differ in Practice
Reading the text of a constitution only tells you part of the story. Two other features separate these examples from one another: how hard the document is to change, and whether courts can enforce it against the legislature.
The U.S. federal amendment process is among the most demanding in the world. Article V requires a two-thirds vote of both houses of Congress (or a convention called by two-thirds of state legislatures) to propose an amendment, followed by ratification from three-fourths of the states.16National Archives. The Constitution of the United States: A Transcription Those thresholds explain why only 27 amendments have made it through in over two centuries. State constitutions, by contrast, are much easier to change, which is a large part of why they run so long. Seventeen states also let citizens propose amendments directly by petition, with signature requirements running from 3 to 15 percent of votes cast in the most recent gubernatorial election. Germany’s Basic Law adds a further wrinkle: certain provisions cannot be amended at all.
The enforcement question splits the examples just as sharply. In the United States, the Supreme Court claimed the power of judicial review in Marbury v. Madison in 1803, and it has been settled ever since that federal and state laws conflicting with the Constitution can be struck down.17National Archives. Marbury v. Madison South Africa’s Constitutional Court and Germany’s Federal Constitutional Court hold comparable or broader authority. UK and New Zealand courts do not. Israel’s answer is still contested. The practical weight of any given constitution depends heavily on which side of that line its courts sit on.