Mao Zedong: 1943 - 1976 (various titles?). He was sidelined around 1959 and staged a successful coup, retaking actual power, in 1966. Hua Guofeng: 1976 - 1981

Mao Zedong: 1943 - 1976 (various titles?). He was sidelined around 1959 and staged a successful coup, retaking actual power, in 1966. Hua Guofeng: 1976 - 1981 Hu Yaobang: 1981 - 1987 Zhao Ziyang: 1987 - 1989. Removed from office for reasons related to the Tiananmen protests. Jiang Zemin: 1989 - 2002 Hu Jintao: 2002 - 2012 Xi Jinping: 2012 - present ( https://en.wikipedia.org/wiki/Leader_of_the_Chinese_Communist_Party https://en.wikipedia.org/wiki/Leader_of_the_Chinese_Communis... ) So far he's in third place for length of service.