Secretariat of the Communist Party of Vietnam in the context of Tô Lâm

The Communist Party of Vietnam (CPV) is the sole legal party of Vietnam. Founded in 1930 by Ho Chi Minh, the CPV became the ruling party of North Vietnam in 1954 after the First Indochina War and all of Vietnam in 1975 after the Vietnam War. 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" (Đảng) or "our Party" (Đảng ta).

The CPV is organized on the basis of democratic centralism, a principle conceived by Russian Marxist revolutionary Vladimir Lenin. The highest institution of the CPV is the party's National Congress, which elects the Central Committee. The Central Committee is the supreme organ on party affairs in between party congresses. After a party congress, the Central Committee elects the Politburo and Secretariat, and appoints the General Secretary, the highest party office. In between sessions of the Central Committee, the Politburo is the supreme organ on party affairs. However, it can only implement decisions based on the policies which have been approved in advance by either the Central Committee or the party's National Congress. As of 2017, the 12th Politburo has 19 members.

Nguyễn Phú Trọng (Vietnamese: [ŋwiən˦ˀ˥ fu˧˦ t͡ɕawŋ͡m˧˨ʔ] new-yen foo chong; 14 April 1944 – 19 July 2024) was a Vietnamese politician and political theorist who served as general secretary of the Communist Party of Vietnam from 2011 until his death in 2024. As the head of the party's Secretariat, Politburo and Central Military Commission, Trọng was Vietnam's paramount leader. From 2018 to 2021, he also served concurrently as the tenth president of Vietnam.

A conservative Marxist–Leninist, Trọng joined the Communist Party of Vietnam in 1967 and rose through the section devoted to political work. He later joined the party's Central Committee in 1994, its Politburo in 1997 and Vietnam's National Assembly in 2002. Between 2000 and 2006, he was the Party Secretary for Hanoi, effectively the city's highest-ranking position. He served as Chairman of the National Assembly from 2006 to 2011.

The 12th Politburo, formally the Political Bureau of the 12th Central Committee of the Communist Party of Vietnam (CPV, Vietnamese: Bộ Chính trị Ban Chấp hành trung ương Đảng Cộng sản Việt Nam Khoá XII), was elected at the 1st Plenary Session of the 12th Central Committee (CC) on 27 January 2016 during the 12th National Congress to serve for a five-year electoral term. The Politburo is a central leading organ of the CPV Central Committee tasked with directing the general orientation of the party and state. In this sense, it functions as the highest political organ of the CPV when the Party's National Congress and the Central Committee are adjourned. Since Vietnam is a communist state that bases its governance system on the principle that "the Party leads and the State manages", the Politburo also function as the highest decision-making institution in Vietnam. The Politburo convenes meetings several times a month to discuss and decide policy, and the Secretariat, another central leading organ, ensures that said policies are executed by the relevant institution in question, such as the National Assembly of Vietnam if the policy concerns law-making, or the Party's Central Organisation Commission if it concerns cadre policy. The total number of meetings the 12th Politburo convened has not been publicly disclosed to the media. Some have been publicly reported, however, and are listed below (see "Convocations" section).

The 12th National Congress adopted a resolution that stated the CPV needed to establish a streamlined, efficient political system and combat corruption, waste, and bureaucracy. Shortly after his re-election to the Politburo and as General Secretary of the Central Committee on 27 January 2016, Nguyễn Phú Trọng ramped up his anti-corruption campaign. Đinh La Thăng was removed from the Politburo in May 2017 by the 12th CC's 5th Plenary Session when the 12th Central Inspection Commission started investigating him for mismanaging the state-owned enterprise PetroVietnam, resulting in a loss of 900 billion Vietnamese dongs (around 40 million United States dollars); he was arrested in December 2017 and sentenced to thirteen years in prison in January 2018. In tandem with the anti-corruption drive, Prime Minister Nguyễn Xuân Phúc began to streamline the government by cutting the number of deputy prime ministers from five to four and ministries from 26 to 22. Institutionally, the campaign was strengthened by appointing six members of the 12th Politburo to serve in the Central Steering Committee on Anti-corruption, providing the Central Inspection Commission with the ability to audit and supervise personnel property declarations under the Politburo and Secretariat's management, and seven central inspection teams were established to investigate serious corruption cases that drew public attention. This campaign developed alongside a campaign to strengthen party morality and Marxist–Leninist ideology and to combat perceived ideological evils such as liberal democratic values, self-evolution and self-transformation.

The Central Theoretical Council of the Central Committee of the Communist Party of Vietnam (Vietnamese: Hội đồng Lý luận Trung ương Đảng Cộng sản Việt Nam) was established on 22 October 1996 by a decision of the Central Committee, and is responsible for conceiving and developing the party's Marxist theoretical standpoint. It is responsible to the Politburo and the Secretariat in between sessions of the Central Committee and the party's National Congress.

The 4th Central Theoretical Council was formed on 7 September 2016 and is currently headed by Politburo member Nguyễn Xuân Thắng. It is composed of 44 members, mostly from academic circles or from the Central Propaganda Department.