| Type: | commune |
| County: | Dâmbovița |
| Râu Alb | |
| Leader Name: | Cătălin Preda |
| Leader Party: | PSD |
| Leader Term: | 2020 - 2024 |
| Coordinates: | 45.15°N 46°W |
| Elevation: | 490 |
| Area Total: | 24.69 |
| Population Total: | auto |
| Postal Code: | 137027 |
| Area Code: | +(40) 245 |
Râu Alb is a commune in Dâmbovița County, Muntenia, Romania, with 1500 inhabitants. It is composed of two villages, Râu Alb de Jos (the commune center) and Râu Alb de Sus. These were part of Bărbulețu Commune until 2004, when they were split off.
The commune is situated in the southern foothills of the Făgăraș Mountains, at a mean altitude of, on the banks of the river Râul Alb. It is located in the northern part of Dâmbovița County, about away from the town of Pucioasa, and about from Târgoviște, the county seat. The commune has its own hospital, church, and police station.