| Deju | |
| Pushpin Map: | Romania |
| Subdivision Type1: | Country |
| Subdivision Name1: | Romania |
| Subdivision Type2: | Counties |
| Subdivision Name2: | Vrancea County |
| Subdivision Type3: | Villages |
| Subdivision Name3: | Negrilești |
| Length: | 11km (07miles) |
| Mouth: | Putna |
| Mouth Location: | Negrilești |
| Mouth Coordinates: | 45.9209°N 26.7024°W |
| Basin Size: | 34km2 |
| Tributaries Left: | Tighitău |
The Deju is a left tributary of the river Putna in Romania.[1] It flows into the Putna near Negrilești. Its length is 11km (07miles) and its basin size is 34km2.