Oldest Constitutions in the World

Constitutions, the bedrock of nations, outline fundamental principles, governmental powers and citizen rights. Many of the world's constitutions were originally written a few centuries ago, but have been amended over the years when necessary. This list contains some of the world's oldest constitutions, which have been in continuous (with many revisions and amendments) use since they were first written.

The Constitution of San Marino, dating back to the year 1600, holds the distinction of being one of the oldest written constitutions still in use today. The document outlines the organization of its government, the rights of its citizens and the principles that guide this ancient microstate.

The United States Constitution, ratified on June 21, 1788, remains a cornerstone of democratic governance. Crafted during the American Revolutionary era, it established the framework for the federal government, delineated the separation of powers, and enshrined individual rights. Notably, the Bill of Rights, added in 1791, guarantees fundamental freedoms such as freedom of speech, religion and due process.