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Sisowath Watchayavong | |
|---|---|
| ស៊ីសុវត្ថិ វឌ្ឍឆាយាវង្ស | |
 | |
| Prime Minister of Cambodia | |
| In office 25 July 1947 – 20 February 1948 | |
| Monarch | Norodom Sihanouk |
| Preceded by | Sisowath Youtevong |
| Succeeded by | Chhean Vam |
| Personal details | |
| Born | 13 September 1891 Phnom Penh, Cambodia, French Indochina |
| Died | 30 January 1972 (aged 80) Phnom Penh, Khmer Republic |
| Political party | Democratic Party |
| Parent |
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| Alma mater | École libre des sciences politiques |
| House | Sisowath |
Sisowath Watchayavong (Khmer: ស៊ីសុវត្ថិ វឌ្ឍឆាយាវង្ស; 13 September 1891 – 30 January 1972) was a Cambodian politician who served as the Prime Minister of Cambodia from 1947 to 1948. He was a grandson of King Sisowath.