The monarchy of Canada forms the core of each Canadian provincial jurisdiction's Westminster-style parliamentary democracy, being the foundation of the executive, legislative, and judicial branches of government in each province. The monarchy has been headed since September 8, 2022 by King Charles III who as sovereign is shared equally with both the Commonwealth realms and the Canadian federal entity. He, his consort, and other members of the Canadian royal family undertake various public and private functions across the country. He is the only member of the royal family with any constitutional role.

The monarchy of Canada is Canada's form of government embodied by the Canadian sovereign and head of state. It is one of the key components of Canadian sovereignty and sits at the core of Canada's constitutional federal structure and Westminster-style parliamentary democracy. The monarchy is the foundation of the executive (King-in-Council), legislative (King-in-Parliament), and judicial (King-on-the-Bench) branches of both federal and provincial jurisdictions. The current monarch is King Charles III, who has reigned since 8 September 2022.