| Type: | commune |
| County: | Sibiu |
| Râu Sadului | |
| Leader Name: | Daniel Dumitru Minea |
| Leader Party: | PNL |
| Leader Term: | 2020 - 2024 |
| Coordinates: | 45.6167°N 28°W |
| Elevation: | 610 |
| Area Total: | 52.21 |
| Population Total: | auto |
| Postal Code: | 557205 |
Râu Sadului (Hungarian: Riuszád) is a commune in Sibiu County, Transylvania, Romania, at the foothills of the Cindrel Mountains, south of the county capital Sibiu, in the Mărginimea Sibiului ethnographical area. It is composed of a single village, Râu Sadului. At the 2011 census, 100% of inhabitants were ethnic Romanians.