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In accordance with Article 41 of Vanuatu's constitution, the Prime Minister is appointed by Parliament from amongst its members. The election is conducted with a secret ballot. Article 43 of the constitution allows for a Prime Minister to be removed by a vote of no confidence, although the motion which starts this process must be signed by at least a sixth of Parliament and must be presented a week in advance of the vote. In a vote of no confidence, a Prime Minister can be deposed by an absolute majority of Parliament, although he or she will continue to carry out the functions of office until a successor is elected.
The Prime Minister is the head of Vanuatu's cabinet, and is responsible for appointing and dismissing ministers. All ministerial appointments are tied to the Prime Minister's tenure, meaning that if a Prime Minister dies or resigns, the entire cabinet is dismissed.
The position of Prime Minister was created when Vanuatu obtained its independence in 1980, with independence campaigner Walter Lini becoming the office-holder. The position is sometimes seen as a continuation of the older office of Chief Minister, which existed before Vanuatu obtained its independence. So far, six people have served as Prime Minister of Vanuatu, sometimes on multiple occasions.
| Name | Took Office | Left Office | Party | |
| 1 | Walter Lini | 30 July 1980 | 6 September 1991 | Vanua'aku Party |
| 2 | Donald Kalpokas | 6 September 1991 | 16 December 1991 | Vanua'aku Party |
| 3 | Maxime Carlot Korman | 16 December 1991 | 21 December 1995 | Union of Moderate Parties |
| 4 | Serge Vohor | 21 December 1995 | 23 February 1996 | Union of Moderate Parties |
| Maxime Carlot Korman , 2nd time | 23 February 1996 | 30 September 1996 | Union of Moderate Parties | |
| Serge Vohor, 2nd time | 30 September 1996 | 30 March 1998 | Union of Moderate Parties | |
| Donald Kalpokas , 2nd time | 30 March 1998 | 25 November 1999 | Vanua'aku Party | |
| 5 | Barak Sopé | 25 November 1999 | 13 April 2001 | Melanesian Progressive Party |
| 6 | Edward Natapei | 13 April 2001 | 29 July 2004 | Vanua'aku Party |
| Serge Vohor, 3rd time | 29 July 2004 | (present) | Union of Moderate Parties |