| Cernu River | |
| River | |
| Countries | Romania |
|---|---|
| Counties | Bacău County |
| Tributaries | |
| - left | Secătura, Păltiniș, Șoșa |
| Villages | Buda, Cernu, Românești |
| Source | Bulimandru Hill |
| - location | Berzunți Mountains |
| - elevation | 682 m (2,238 ft) |
| - coordinates | 46°24′42″N 26°34′42″E / 46.41167°N 26.57833°E |
| Mouth | Tazlău |
| - location | Românești |
| - elevation | 274 m (899 ft) |
| - coordinates | 46°29′31″N 26°40′42″E / 46.49194°N 26.67833°ECoordinates: 46°29′31″N 26°40′42″E / 46.49194°N 26.67833°E |
| Progression | Tazlău→ Trotuș→ Siret→ Danube→ Black Sea |
The Cernu River is a right tributary of the Tazlău River in Romania. It discharges into the Tazlău in Românești.