| Cuejdiu | |
| Pushpin Map: | Romania |
| Subdivision Type1: | Country |
| Subdivision Name1: | Romania |
| Subdivision Type2: | Counties |
| Subdivision Name2: | Neamț County |
| Subdivision Type3: | Villages |
| Subdivision Name3: | Cuejdiu, Gârcina, Piatra Neamț |
| Length: | 24km (15miles) |
| Mouth: | Bistrița |
| Mouth Location: | Piatra Neamț |
| Mouth Coordinates: | 46.9236°N 26.3675°W |
| Basin Size: | 98km2 |
The Cuejdiu is a left tributary of the river Bistrița in Romania.[1] It discharges into the Bistrița in Piatra Neamț.[2] Its length is 24km (15miles) and its basin size is 98km2.