| Hermanu River | |
| River | |
| Countries | Romania |
|---|---|
| Counties | Neamţ County |
| Source | |
| - location | Yarcău Mountains, Mount Herman |
| - elevation | 1,065 m (3,494 ft) |
| - coordinates | |
| Mouth | Tarcău |
| - location | Cazaci |
| - elevation | 444 m (1,457 ft) |
| - coordinates | |
The Hermanu River is a tributary of the Tarcău River in Romania.