| Chau Seng | |
| Native Name: | ចៅ សេង |
| Native Name Lang: | km |
| Birth Date: | 15 March 1929 |
| Birth Place: | Tri Tôn, Châu Đốc Province, Cochinchina, French Indochina |
| Death Place: | Democratic Kampuchea |
| Occupation: | Politician |
| Organization: | Sangkum |
Chau Seng (Central Khmer: ចៅ សេង, 15 March 19291977) was a Cambodian left-wing politician.
Seng was a Khmer Krom. Born in commune of Tri Tôn, Châu Đốc Province, Cochinchina (in present-day An Giang Province, Vietnam). He was a cousin of Chau Sen Cocsal Chhum. Educated in France, in Paris, he became a communist. On his return to Cambodia, he had become Norodom Sihanouk's private secretary.[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. After that he was appointed under-secretary, and later secretary of state for education. In 1967, he was rector of the Buddhist University.[2] Seng made a national attempt at Cambodianization, however it was failed.[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.[6]