| Sarin Chhak | |
| Office: | Minister of Foreign Affairs |
| Primeminister: | Penn Nouth |
| Term Start: | 17 April 1975 |
| Term End: | 4 April 1976 |
| Predecessor: | Keuky Lim |
| Successor: | Ieng Sary |
| Birth Name: | Khin Kaing |
| Birth Date: | 2 January 1922 |
| Birth Place: | Takéo, Cambodia |
| Death Date: | 1979 (aged 57) |
| Death Place: | Hanoi, Vietnam |
| Party: | National United Front of Kampuchea (1970–1976) Sangkum (1955–1970) |
| Alma Mater: | Phnom Penh University (LLB) University of Paris (PhD) |
Sarin Chhak (km|សារិន ឆាក; 2 January 1922 – 1979) was a Cambodian statesman and diplomat who served as Minister of Foreign Affairs from 1975 to 1976. He died in 1979 in Vietnamese custody following the Vietnamese invasion of Cambodia.[1]
He was an expert in borders. He graduated with a PhD from the University of Paris in 1966 with his thesis titled Les frontières du Cambodge (The Borders of Cambodia).[2]