The Prime Minister of Estonia (Estonian: Eesti Vabariigi Peaminister) is the head of government of the Republic of Estonia. The prime minister is chosen by the President and conferred by Parliament. This is usually the leader of the largest party or coalition in the Parliament. The current Prime Minister is Andrus Ansip, who took office on 12 April 2005, representing the coalition of Estonian Reform Party (Eesti Reformierakond), the Estonian Centre Party (Eesti Keskerakond), and the People's Union of Estonia (Eestimaa Rahvaliit).
The activity of the government is directed by the Prime Minister, who is the actual political head of state. He does not head any specific ministry, but is, in accordance with the constitution, the supervisor of the work of the government. The Prime Minister’s significance and role in the government and his relations with other ministries often depend on the position of the party led by the prime minister in vis-à-vis the coalition partners, and on how much influence the prime minister possesses within his own party. If the prime minister has a strong position within his party, and the government is made up solely of representatives of that party, he can enjoy considerable authority. In all crucial national questions, however, the final word rests with Riigikogu as the legislative power.