Qarah Su Rural District (Kermanshah County)
Qarah Su Rural District 
    Persian: دهستان قره سو  | |
|---|---|
| Coordinates: 34°10′12″N 47°14′56″E / 34.17000°N 47.24889°E | |
| Country | Iran | 
| Province | Kermanshah | 
| County | Kermanshah | 
| District | Central | 
| Population  (2016)  | |
 • Total  | 7,223 | 
| Time zone | UTC+3:30 (IRST) | 
Qarah Su Rural District (Persian: دهستان قره سو) is in the Central District of Kermanshah County, Kermanshah province, Iran. Its former capital was the village of Kahriz.