The Gang of Four () was a Maoist political faction composed of four Chinese Communist Party (CCP) officials. They came to prominence during the Cultural Revolution (1966–1976) and were later charged with a series of treasonous crimes. The gang's leading figure was Jiang Qing (Mao Zedong's last wife). The other members were Zhang Chunqiao, Yao Wenyuan, and Wang Hongwen.
The Gang of Four controlled the power organs of the CCP through the later stages of the Cultural Revolution, although it remains unclear which major decisions were made by Mao Zedong and carried out by the Gang, and which were the result of the Gang of Four's own planning.
Their fall did not amount to a rejection of the Cultural Revolution as such, but it was organized by the new leader, Premier Hua Guofeng, and others who had risen during that period. Significant repudiation of the entire process of change came later, with the return of Deng Xiaoping at the 11th National Congress of the Chinese Communist Party and Hua's gradual loss of authority.
The group was led by Jiang Qing, and consisted of three of her close associates, Zhang Chunqiao, Yao Wenyuan, and Wang Hongwen. Two other men who were already dead in 1976, Kang Sheng and Xie Fuzhi, were named as having been part of the "Gang". Chen Boda and Mao Yuanxin, the latter being Mao's nephew, were also considered some of the Gang's closer associates.
Most Western accounts consider that the actual leadership of the Cultural Revolution consisted of a wider group, referring predominantly to the members of the Central Cultural Revolution Group. Most prominent was Lin Biao, until his purported defection from China and death in a plane crash in 1971. Chen Boda is often classed as a member of Lin's faction rather than Jiang Qing's.
At the beginning of the Cultural Revolution, on November 10, 1965, Yao Wenyuan in one of his most famous pieces of writing published an article in Wenhuibao criticizing the play Hai Rui Dismissed from Office.