Belgium is a constitutional, hereditary and popular monarchy. The monarch is titled King of the Belgians and serves as the country's head of state and commander-in-chief of the Belgian Armed Forces. There have been seven Belgian monarchs since independence in 1830.

Constitutional monarchy, also known as limited monarchy, parliamentary monarchy or democratic monarchy, is a form of monarchy in which the monarch exercises their authority in accordance with a constitution and is not alone in making decisions. Constitutional monarchies differ from absolute monarchies in that they are bound to exercise powers and authorities within limits prescribed by an established legal framework.