The Constitution of the Kingdom of the Netherlands of 24 August 1815 (Dutch: Grondwet voor het Koninkrijk der Nederlanden van 24 augustus 1815) is one of two fundamental documents governing the Kingdom of the Netherlands as well as the fundamental law of the Netherlands proper (the territory of the Kingdom mainly situated in Europe). The Kingdom of the Netherlands also includes Aruba, Curaçao and Sint Maarten: there is an overarching instrument of the entire kingdom that has constitution characteristics: the Charter for the Kingdom of the Netherlands. Sint Maarten is the only country in the Kingdom of the Netherlands that has a constitutional court to govern the Sint Maarten legislature.
The constitution of the Netherlands is only applicable to the Netherlands proper, i.e. the territory in Europe and its public bodies of Bonaire, Sint Eustatius and Saba, the latter three since 2010 special municipalities, in the Caribbean, except when the Charter does not cover a certain legal subject. It is generally seen as directly derived from the one issued in 1815, constituting a constitutional monarchy; it is the third oldest constitution still in use worldwide. A revision in 1848 instituted a system of parliamentary democracy. In 1983, the most recent major revision of the Constitution of the Netherlands was undertaken, almost fully rewriting the text and adding new civil rights.