The monarchy of the Netherlands is a constitutional monarchy whose role and position are governed by the Constitution of the Netherlands. Roughly a third of the Constitution explains the succession, mechanisms of accession and abdication to the throne, the roles and duties of the monarch, the formalities of communication between the States General of the Netherlands, and the monarch's role in creating laws.

The House of Nassau is a diversified aristocratic dynasty in Europe. It is named after the lordship associated with Nassau Castle, located in present-day Nassau, Rhineland-Palatinate, Germany. With the fall of the Hohenstaufen in the first half of the 13th century royal power within Franconia evaporated and the former stem duchy fragmented into separate independent states. Nassau emerged as one of those independent states as part of the Holy Roman Empire. The lords of Nassau were originally titled "Count of Nassau", subject only to the Emperor, and then elevated to the princely class as "Princely Counts". Early on they divided into two main branches: the elder (Walramian) branch, that gave rise to the German king Adolf, and the younger (Ottonian) branch, that gave rise to the Princes of Orange and the monarchs of the Netherlands.