The monarchy of Grenada is a system of government in which a hereditary monarch is the sovereign and head of state of Grenada. The current Grenadian monarch and head of state, since 8 September 2022, is King Charles III. As sovereign, he is the personal embodiment of the Grenadian Crown. Although the person of the sovereign is equally shared with 14 other independent countries within the Commonwealth of Nations, each country's monarchy is separate and legally distinct. As a result, the current monarch is officially titled King of Grenada and, in this capacity, he and other members of the royal family undertake public and private functions domestically and abroad as representatives of Grenada. However, the King is the only member of the royal family with any constitutional role.

Grenada is an island country of the West Indies in the eastern Caribbean Sea. The southernmost of the Windward Islands, Grenada is directly south of Saint Vincent and the Grenadines and about 100 miles north of Trinidad and the South American mainland.