| Otăsău River | |
| River | |
| Countries | Romania |
|---|---|
| Counties | Vâlcea County |
| Tributaries | |
| - left | Tisa River, Valea Sărată |
| Villages | Bărbăteşti, Pietrari, Păuşeşti, Frânceşti |
| Source | |
| - location | Căpăţânii Mountains |
| Mouth | Bistriţa |
The Otăsău River is a tributary of the Bistriţa River in Romania.