| Iauna | |
|---|---|
| Location | |
| Country | Romania |
| Counties | Caraș-Severin County |
| Physical characteristics | |
| Mouth | Cerna |
• coordinates | 45°03′32″N 22°36′04″E / 45.059°N 22.601°E |
| Length | 7 km (4.3 mi) |
Basin size | 23 km2 (8.9 sq mi) |
| Basin features | |
| Progression | Cerna→ Danube→ Black Sea |
The Iauna is a right tributary of the river Cerna in Romania. It discharges into the Cerna near Țațu. Its length is 7 km (4.3 mi) and its basin size is 23 km2 (8.9 sq mi).