The Prime Minister of Cambodia (Khmer: នាយករដ្ឋមន្ត្រីនៃព្រះរាជាណាចក្រកម្ពុជា; Neayuok Rotmontrey ney Preah Reacheanachak Kampuchea), is the head of government of the Kingdom of Cambodia. Prime Minister is appointed by the King under Article 119 of the Constitution and is responsible for leading the government of the Kingdom.
Constitutional powers 
The powers of the Prime Minister are established by the current Constitution of Cambodia, adopted on 24 September 1993 and amended on 4 March 1999. They are defined by the following articles of the Constitution:
- Article 11: If the King can not perform its normal functions of head of state because of a serious illness certified by a group of medical experts appointed by the President of the Senate, the Speaker of the Assembly and the Prime Minister, the President of the Senate shall serve as head of state in place of King as Regent.
- Article 13: Within seven days at most - after the vacancy of the throne - the new King of Cambodia is selected by the Throne Council. Council members include the following:
- The President of the Senate
- The President of the Assembly
- Prime Minister
- The leaders of two religious orders, Thammayut and Mohanikay
- First and second vice president of the Senate
- First and second vice president of the Assembly.
- Article 19: The King appoints the Prime Minister and the Council of Ministers as provided for in section 119.
- Article 20: The King receives the Prime Minister and the Cabinet in official audience twice a month to inquire about the situation of the country.
- Article 22: When the nation is in danger, the King publicly declared state of emergency with the approval of the Prime Minister, the President of the National Assembly and the Senate President.
- Article 78: .... The National Assembly may be dissolved before the end of its term except when the royal government was overthrown twice during a twelve month period. In this case, the King shall, upon proposal of the Prime Minister and with the consent of the President of the National Assembly, dissolved the National Assembly. ...
- Article 83: ... Each session of the National Assembly last at least three months. At the request of the King or the Prime Minister's or a third of the members of the National Assembly, the Standing Committee of the Assembly shall convene the National Assembly for a special session. ...
- Article 88: Meetings of the National Assembly are public. The National Assembly may meet in closed session at the request of the President or at least one tenth of its members, at the request of the king or at the request of the Prime Minister. ...
- Article 91: Senators, MPs and the Prime Minister has the legislative initiative.
- Article 96: Members have the right to question the royal government. The questions are written and transmitted through the President of the National Assembly. Answers are provided by one or several ministers depending on whether the problem concerns the responsibility of one or several ministers. If the problem is the policy of the Royal Government, the Prime Minister must answer in person. The answers of the Minister or the Prime Minister are oral or written. The above answers are given within a period of seven days after receiving the questions. If the answer is oral, the president of the National Assembly may decide whether or not to open the debate. If it does not allow for debate, the answers of the Minister or the Prime Minister put an end to questions. If it authorizes the opening of a debate, the questioners, the other speakers, the minister in question or the Prime Minister to discuss and exchange views in a period not exceeding one session.
- Article 107: The Senate shall meet in ordinary session twice a year. Each session lasts at least three months. At the request of the King or the proposal of the Prime Minister or at least a third of its members, the Senate summoned its members for a special session.
- Article 111: The Senate hearings are public. The Senate may meet in closed session at the request of the President or at least one tenth of its members, at the request of the King, at the request of the Prime Minister or at the request of the President of the National Assembly.
- Article 118: The Council of Ministers is the Royal Government of Cambodia. The Council of Ministers is headed by a Prime Minister, assisted by vice prime ministers and ministers of state, ministers and state secretaries as members.
- Article 119: On the proposal of the President and with the assent of the two vice-presidents of the National Assembly, the King means a person among the members of the winning party in elections to form the Royal Government. The person appointed, along with colleagues who are MPs or party members are represented in the National Assembly responsible for ministerial posts in the royal government, seeking the confidence of the National Assembly. When the National Assembly voted confidence, the King signs the Kret appointment of the entire Cabinet. Before his grafted in office, the Council of Ministers shall take an oath under the terms provided in Annex 6.
- Article 121. All members of the Royal Government are collectively responsible to the National Assembly of the general policy of the royal government. Each member of the Royal Government is individually responsible to the Prime Minister and the National Assembly of the acts he committed.
- Article 123: The Cabinet meets every week in plenary session or work session. The plenary session was chaired by the Prime Minister. The Prime Minister may delegate to the Deputy Prime Minister chairing meetings. All minutes of meetings of the Council of Ministers must be forwarded to the King for his information.
- Article 124: The Prime Minister may delegate its powers to deputy prime minister or a member of the royal government.
- Article 125: When the position of Prime Minister is permanently vacant, must be carried to the appointment of a new Council of Ministers as provided for in this constitution. If the vacancy is temporary, an acting Prime Minister is temporarily appointed.
- Article 140: The King, the Prime Minister, the President of the National Assembly or one tenth of the deputies, the President of the Senate or one quarter of senators, may refer the laws passed by the National Assembly to the Constitutional Council for review before promulgation. The Rules of Procedure of the National Assembly, the Rules of the Senate and the organic laws must be submitted to the Constitutional Council for review before promulgation. The Constitutional Council shall decide, within 30 days on the compliance or non-compliance of these laws or rules of the Assembly and the Senate with the constitution.
- Article 141: After enactment of a law, the King, the chairman of the Senate, the president of the National Assembly, the Prime Minister, one quarter of the Senate, one tenth of the deputies or the courts may ask the Constitutional Council to determine the constitutionality of this law. A citizen has the right to challenge the constitutionality of laws through the Parliament or the President of the National Assembly or the Senate or the President of the Senate as provided in the preceding paragraph.
- Article 148: The National Convention meets once a year, in early December at the call of Prime Minister. The national conference is held under the chairmanship of the King.
- Article 151: The initiative of the revision or amendment of the constitution belongs to the King, the Prime Minister and the President of the National Assembly, on proposal of one fourth of all members of the Assembly National. Revision or amendment of the constitution must be done by a constitutional law voted by the National Assembly by a majority of two thirds of all members of the National Assembly.
See also