The Monarchy of Canada, also known as the Canadian monarchy, is a system of government in which a hereditary monarch is the sovereign of Canada, holding the position of head of state; the incumbent is Elizabeth II, officially called Queen of Canada (French: Reine du Canada), who has reigned since February 6, 1952. The heir apparent is Elizabeth's eldest son, Prince Charles, though the Queen is presently the only member of the Canadian Royal Family with any constitutional role. She, her husband and consort, Prince Philip, Duke of Edinburgh, Prince Charles, and other members of the Royal Family, including the Queen's other children and cousins, undertake various public ceremonial functions across Canada and on behalf of Canada abroad.

Most of the Queen's powers in Canada are exercised by the Governor General, at present Michaëlle Jean, though the monarch does hold several powers that are hers alone. The Governor General, who maintains direct contact with the monarch and serves as her federal representative, is sometimes referred to as Canada's de facto head of state.

The Canadian monarch, besides reigning in Canada, separately serves as head of state for each of fifteen other Commonwealth countries, putting Canada in a personal union relationship with those other states. This developed from the former colonial relationship of these countries to Britain, but they are now independent and the monarchy of each is legally distinct.

The Canadian Crown is sometimes colloquially dubbed "the Maple Crown," a term first coined by Governor General Lord Grey in 1905, when he stated about his inauguration of Alberta and Saskatchewan in a telegram to King Edward VII "[each one] a new leaf in Your Majesty's Maple Crown."