The Prime Minister of Jamaica is Jamaica's head of government, currently Portia Simpson Miller. Simpson Miller, as leader of the governing People's National Party (PNP), was sworn in as Prime Minister on 5 January 2012, succeeding Jamaica Labour Party (JLP) leader Andrew Holness. This was a result of the PNP's victory in Jamaica's December 29, 2011 general election.

The Prime Minister is formally appointed into office by the Governor General of Jamaica, who represents Elizabeth II, the Queen of Jamaica (Jamaica's Head of State).

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Coordinates: 18°10′57″N 77°19′18″W / 18.1823878°N 77.3217773°W / 18.1823878; -77.3217773

Jamaica (ⁱ/dʒəˈmeɪkə/), officially the Commonwealth of Jamaica, is an island nation of the Greater Antilles, 234 kilometres (145 mi) in length, up to 80 kilometres (50 mi) in width, and 10,990 square kilometres (4,240 sq mi) in area. It is situated in the Caribbean Sea, about 145 kilometres (90 mi) south of Cuba, and 191 kilometres (119 mi) west of Hispaniola, the island harbouring the nation-states of Haiti and the Dominican Republic. The indigenous Arawakan-speaking Taíno name for the island was Xaymaca, meaning the "Land of Wood and Water" or the "Land of Springs".

Once a Spanish possession known as Santiago, it became an English colony in 1655 under the name "Jamaica". It achieved full independence from Britain on August 6, 1962. With 2.8 million people, it is the third most populous anglophone country in the Americas, after the United States and Canada. It remains a Commonwealth realm in concert with the Monarchy of Jamaica holding ultimate executive power, where Queen Elizabeth II is the current head of state and Queen of Jamaica.Kingston is the country's largest city and the capital.

A prime minister is the most senior minister of cabinet in the executive branch of government in a parliamentary system. In many systems, the prime minister selects and may dismiss other members of the cabinet, and allocates posts to members within the government. In most systems, the prime minister is the presiding member and chairman of the cabinet. In a minority of systems, notably in semi-presidential systems of government, a prime minister is the official who is appointed to manage the civil service and execute the directives of the head of state.

In parliamentary systems fashioned after the Westminster system, the prime minister is the presiding and actual head of the government and head of the executive branch. In such systems, the head of state or the head of state's official representative (i.e. the monarch, president, or governor-general) usually holds a largely ceremonial position, although often with reserve powers.

The prime minister is often, but not always, a member of parliament and is expected with other ministers to ensure the passage of bills through the legislature. In some monarchies the monarch may also exercise executive powers (known as the royal prerogative) which are constitutionally vested in the crown and may be exercised without the approval of parliament.