By the arrangements of the Canadian federation, Canada's monarchy operates in Manitoba as the core of the province's Westminster-style parliamentary democracy. As such, the Crown within Manitoba's jurisdiction is referred to as the Crown in Right of Manitoba, His Majesty in Right of Manitoba, or the King in Right of Manitoba. The Constitution Act, 1867, however, leaves many royal duties in Manitoba specifically assigned to the sovereign's viceroy, the lieutenant governor of Manitoba, whose direct participation in governance is limited by the conventional stipulations of constitutional monarchy.

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.