| Chiềng Sơ | |
|---|---|
| — Commune and village — | |
|
Chiềng Sơ
|
|
| Coordinates: | |
| Country | Vietnam |
| Province | Dien Bien Province |
| District | Dien Bien Dong District |
| Time zone | UTC+7 (UTC+7) |
Chiềng Sơ or Chong Su is a commune (xã) and village of the Dien Bien Dong District of Dien Bien Province, northwestern Vietnam.[1]