Si Ma Cai district
Si Ma Cai district 
    Huyện Si Ma Cai  | |
|---|---|
Scenery at Can Cau - Lao Cai Province  | |
| Country | Vietnam | 
| Region | Northeast | 
| Province | Lào Cai | 
| Capital | Si Ma Cai | 
| Area | |
 • Total  | 93 sq mi (241 km2) | 
| Population  (2003)  | |
 • Total  | 25,554 | 
| Time zone | UTC+7 (Indochina Time) | 
Si Ma Cai is a rural district of Lào Cai province in the Northeast region of Vietnam. As of 2003, the district had a population of 25,554. The district covers an area of 241 km2. The district capital lies at Si Ma Cai.