| Valea Mărului River | |
| River | |
| Countries | Romania |
|---|---|
| Counties | Prahova County |
| Source | |
| - location | Baiu Mountains |
| - elevation | 1,294 m (4,245 ft) |
| - coordinates | |
| Mouth | Prahova River |
| - location | Downstream of Azuga |
| - elevation | 908 m (2,979 ft) |
| - coordinates | |
The Valea Mărului River is a tributary of the Prahova River in Romania.