Heng Samrin (Khmer: ហេង សំរិន; born 25 May 1934) is a Cambodian politician who served as the President of the National Assembly of Cambodia (2006–2023).

In 1978, after a series of violent purges within the Khmer Rouge leadership in which many prominent cadre members whom Pol Pot felt might be rivals were executed, he fled to Vietnam.

[4] Later that year, Heng returned to Cambodia and organized a resistance movement with the backing and support of Vietnam and the Soviet Union.

[8] According to that book, among supporters of the ruling CPP Heng Samrin is a "much loved and respected figure", even though his recent duties are often largely ceremonial.

[9] His full title is Samdach Akeak Moha Ponhea Chakrei Heng Samrin, Protean Radhsaphea ney Preah Reacheanachak Kampuchea (Khmer: សម្តេចអគ្គមហាពញាចក្រី ហេង សំរិន ប្រធានរដ្ឋសភា នៃព្រះរាជាណាចក្រកម្ពុជា).