| Valea lui Damian | |
| Pushpin Map: | Romania |
| Subdivision Type1: | Country |
| Subdivision Name1: | Romania |
| Subdivision Type2: | Counties |
| Subdivision Name2: | Giurgiu County |
| Subdivision Type3: | Villages |
| Subdivision Name3: | Satu Nou |
| Length: | 11km (07miles) |
| Source1 Coordinates: | 44.025°N 25.61°W |
| Source1 Elevation: | 82m (269feet) |
| Mouth: | Câlniștea |
| Mouth Location: | Lake Chița, Răsuceni |
| Mouth Coordinates: | 44.0903°N 25.6753°W |
| Mouth Elevation: | 71m (233feet) |
| Basin Size: | 51km2 |
The Valea lui Damian is a right tributary of the river Câlniștea in Romania. It flows into the Câlniștea in Răsuceni. Its length is 11km (07miles) and its basin size is 51km2.