The political system in East Timor is a unitary semi-presidential representative democratic republic, whereby the Prime Minister of East Timor is the head of government and the President of East Timor functions as head of state. East Timor has a multi-party system. Executive power is exercised by the president and the government. Legislative power is vested in both the government and the National Parliament. The Judiciary is independent of the executive and the legislature. The East Timorese constitution was modelled on that of Portugal, with lesser power given to the president. The country is still in the process of building its administration and governmental institutions. The Economist Intelligence Unit rated East Timor a "flawed democracy" in 2022.

The prime minister of East Timor, officially the Prime Minister of the Democratic Republic of Timor Leste, is the head of government in East Timor.