The prime minister of Sri Lanka, officially the prime minister of the Democratic Socialist Republic of Sri Lanka is the most senior member of parliament in the cabinet of ministers. It is the second-most powerful position in Sri Lanka's executive branch behind the president, who is the constitutional chief executive. The Cabinet is collectively held accountable to parliament for their policies and actions. The powers and functions of the Prime Minister has changed several times since the creation of the office in 1947. Harini Amarasuriya is the 16th and current prime minister of Sri Lanka, serving since 24 September 2024.