The politics of Vietnam is dominated by a single party under an authoritarian system, the Communist Party of Vietnam (CPV). The President of Vietnam is the head of state, and the Prime Minister of Vietnam is the head of government, both of these are separate from the General Secretary of the Communist Party of Vietnam who leads the CPV and is head of the Politburo and the Central Military Commission, thus the General Secretary is the de facto supreme leader of Vietnam. Executive power is exercised by the government and the President of Vietnam. Legislative power is vested in the National Assembly of Vietnam. The Judiciary is independent of the executive. The parliament adopted the current Constitution of Vietnam, its fifth, on 28 November 2013.

The Communist Party of Vietnam (CPV), also known as the Vietnamese Communist Party (VCP), is the founding and sole legal party of the Socialist Republic of Vietnam. Founded in 1930 by Hồ Chí Minh, the CPV became the ruling party of North Vietnam in 1954 and then all of Vietnam after the collapse of the South Vietnamese government following the Fall of Saigon in 1975. Although it nominally exists alongside the Vietnamese Fatherland Front, it maintains a unitary government and has centralized control over the state, military, and media. The supremacy of the CPV is guaranteed by Article 4 of the national constitution. The Vietnamese public generally refer to the CPV as simply "the Party" or "our Party".