| Radu River | |
| River | |
| Countries | Romania |
|---|---|
| Counties | Neamţ County, Bacău County |
| Tributaries | |
| - left | Căşăria |
| - right | Hanu, Tărhăuş |
| Source | |
| - location | Tarcău Mountains |
| - elevation | 1,302 m (4,272 ft) |
| - coordinates | |
| Mouth | Tarcău |
| - location | Upstream of Ardeluţa |
| - elevation | 759 m (2,490 ft) |
| - coordinates | |
The Tăcuţa River is a tributary of the Tarcău River in Romania.