Prinsjesdag is the day on which the reigning monarch of the Netherlands addresses a joint session of the States-General of the Netherlands to give the Speech from the Throne, similar to the annual State of the Union in the United States or the British State Opening of Parliament. This speech sets out the main features of government policy for the coming parliamentary session.

A speech from the throne, or throne speech, is an event in certain monarchies in which the reigning sovereign, or their representative, reads a prepared speech to members of the nation's legislature when a session is opened. The address sets forth the government's priorities for its legislative agenda, for which the cooperation of the legislature is sought. The speech is often accompanied by formal ceremony. It is often held annually, although in some places it may occur more or less frequently, whenever a new session of the legislature is opened.