Chau Seng (Khmer: ចៅ សេង, 15 March 1929 – 1977) was a Cambodian left-wing politician.
[1] He joint the Sangkum on 13 April 1957 together with Hou Yuon and Hu Nim.
In the same year, Chau Seng was elected a member of National Assembly.
[3] After the Cambodian coup of 1970 in which Sihanouk was ousted by Lon Nol, Chau Seng served as the Minister for Special Missions of the GRUNK government, the Beijing-based government-in-exile that was formed as a coalition between Sihanouk and the communists.
[4] Seng was arrested, tortured and later executed by the Khmer Rouge at S-21 prison[5] in 1977.