| Valea lui Iovan | |
| Pushpin Map: | Romania |
| Subdivision Type1: | Country |
| Subdivision Name1: | Romania |
| Subdivision Type2: | Counties |
| Subdivision Name2: | Gorj County |
| Length: | 11km (07miles) |
| Mouth: | Cerna |
| Mouth Coordinates: | 45.164°N 22.732°W |
| Basin Size: | 31km2 |
| Tributaries Right: | Godeanu |
| Custom Label: | River code |
| Custom Data: | VI.2.3 |
The Valea lui Iovan is a river in Romania, right tributary of the Cerna. Its source is in the Godeanu Mountains. It discharges into the Valea lui Iovan Reservoir. Its length is 11km (07miles) and its basin size is 31km2.