The monarchy of Antigua and Barbuda is a system of government in which a hereditary monarch is the sovereign and head of state of Antigua and Barbuda. The current Antiguan and Barbudan monarch and head of state, since 8 September 2022, is King Charles III. As sovereign, he is the personal embodiment of the Crown of Antigua and Barbuda. 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 Antigua and Barbuda and, in this capacity, he and other members of the Royal Family undertake public and private functions domestically and abroad as representatives of Antigua and Barbuda. However, the King is the only member of the Royal Family with any constitutional role.
The republics in the Commonwealth of Nations are the sovereign states in the organisation with a republican form of government. As of June 2022, 36 out of the 56 member states were republics. While Charles III is the titular Head of the Commonwealth, the King is not the head of state of the republican members. The King is however, the reigning monarch in the Commonwealth realms. The Head of the Commonwealth role does not carry with it any power; instead, it is a symbol of the free association of Commonwealth members.
The monarchy of Jamaica is a system of government in which a hereditary monarch is the sovereign and head of state of Jamaica. The current Jamaican monarch and head of state, since 8 September 2022, is King Charles III. As sovereign, he is the personal embodiment of the Jamaican 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 Jamaica and, in this capacity, he and other members of the royal family undertake public and private functions domestically and abroad as representatives of the Jamaican state. However, the monarch is the only member of the royal family with any constitutional role.
The monarchy of Barbados was a system of government in which a hereditary monarch was the sovereign and head of state of Barbados from 1966 to 2021. Barbados shared the sovereign with the other Commonwealth realms, with the country's monarchy being separate and legally distinct. The monarch's operational and ceremonial duties were mostly delegated to her representative, the governor-general of Barbados.
The State of Malta, commonly known as Malta, existed between 21 September 1964 and 13 December 1974. It is the predecessor to the modern-day Republic of Malta.
Australia is a constitutional monarchy whose Sovereign also serves as Monarch of the United Kingdom, New Zealand, Canada and eleven other former dependencies of the United Kingdom including Papua New Guinea, which was formerly a dependency of Australia. These countries operate as independent nations, and are known as Commonwealth realms. The history of the Australian monarchy has involved a shifting relationship with both the monarch and also the British government.
There are six monarchies in Oceania with an individual hereditary monarch, who is recognised as the head of state. Each is a constitutional monarchy: the sovereign inherits his or her office, usually keeps it until death or abdication, but is bound by laws and customs in the exercise of their powers. Five of these independent states share King Charles III as their head of state, making them part of a global grouping known as the Commonwealth realms; in addition, all monarchies of Oceania are members of the Commonwealth of Nations. The only sovereign monarchy in Oceania that does not share a monarch with another state is Tonga. Australia and New Zealand have dependencies within the region and outside it, although five non-sovereign constituent monarchs are recognized by New Zealand, Papua New Guinea and France.
The Federation of Nigeria was a predecessor to modern-day Nigeria from 1954 to 1963. It was a British protectorate until its independence on 1 October 1960.
Uganda became an independent sovereign state on 9 October 1962. As a Commonwealth realm, the British monarch, Elizabeth II, remained head of state as Queen of Uganda until the link with the British monarchy was severed on 9 October 1963 and the Kabaka (King) of Buganda, Sir Edward Mutesa II, became the first President of Uganda.
Guyana was a predecessor to the modern-day Co-operative Republic of Guyana and an independent state that existed between 1966 and 1970.
Between independence in 1968 and becoming a republic in 1992, Mauritius was an independent sovereign state that shared its head of state with the United Kingdom and other states headed by Elizabeth II.
The Commonwealth realm of Kenya was a short-lived sovereign state between 12 December 1963 and 12 December 1964 whose head of state was Queen Elizabeth II. It was a predecessor to the Republic of Kenya.
Elizabeth II was Queen of Ghana from 1957 to 1960, when Ghana was an independent sovereign state and a constitutional monarchy. She was also queen of the United Kingdom and other sovereign states. Her constitutional roles in Ghana were delegated to the governor-general of Ghana.
Elizabeth II was Queen of The Gambia from 1965 to 1970, when the Gambia was an independent sovereign state and a constitutional monarchy within the Commonwealth of Nations. She was also the monarch of the other Commonwealth realms, including the United Kingdom. Her constitutional roles in the Gambia were delegated to the governor-general.
Elizabeth II was Queen of Guyana from 1966 to 1970, when Guyana was independent sovereign state with a constitutional monarchy. She was also the sovereign of the other Commonwealth realms, including the United Kingdom. Her constitutional roles were delegated to the governor-general of Guyana.
Elizabeth II was Queen of Kenya from 1963 to 1964, when Kenya was an independent sovereign state with a constitutional monarchy. She was also the sovereign of the other Commonwealth realms, including the United Kingdom. Her roles as the Kenyan head of state were delegated to the governor-general of Kenya.
Elizabeth II was Queen of Malawi from 1964 to 1966, when Malawi was an independent sovereign state and a constitutional monarchy within the Commonwealth of Nations. She was also the sovereign of the other Commonwealth realms, including the United Kingdom. The 1964 Constitution of Malawi vested executive power in the monarch as head of state, though her constitutional roles were delegated to her representative, the Governor-General, Sir Glyn Smallwood Jones, who was also the last Governor of Nyasaland.
Elizabeth II was Queen of Trinidad and Tobago from the independence of Trinidad and Tobago on 31 August 1962 until the country became a republic on 1 August 1976. Her constitutional role as head of state was delegated to a governor-general, who acted on the advice of government ministers.
Queen of Rhodesia was the title asserted for Elizabeth II as Rhodesia's constitutional head of state following the country's Unilateral Declaration of Independence from the United Kingdom. However, the position only existed under the Rhodesian constitution of 1965 and remained unrecognised elsewhere in the world. The British government, along with the United Nations and almost all governments, regarded the declaration of independence as an illegal act and nowhere else was the existence of the British monarch having separate status in Rhodesia accepted. With Rhodesia becoming a republic in 1970, the status or existence of the office ceased to be contestable.
