| Suhu | |
| Name Other: | Suhurlui |
| Pushpin Map: | Romania |
| Subdivision Type1: | Country |
| Subdivision Name1: | Romania |
| Subdivision Type2: | Counties |
| Subdivision Name2: | Galați County |
| Subdivision Type3: | Villages |
| Subdivision Name3: | Corni, Băleni, Rediu, Pechea, Slobozia Conachi, Piscu |
| Length: | 72km (45miles) |
| Source1 Coordinates: | 45.9942°N 27.7169°W |
| Source1 Elevation: | 216m (709feet) |
| Mouth: | Geru |
| Mouth Location: | Piscu |
| Mouth Coordinates: | 45.4831°N 27.7169°W |
| Mouth Elevation: | 10m (30feet) |
| Basin Size: | 373km2 |
| Custom Label: | River code |
| Custom Data: | XII.1.81a.5 |
The Suhu is a left tributary of the river Geru in Romania. It flows into the Geru near Piscu. The basin size of the 72km (45miles) long Suhu is 373km2.[1] It is also known as Suhurlui,[1] but the Suhurlui is also a right tributary of the Suhu. Before the regularization of the lower course of the Siret, it was a tributary of the Bârlădel, a branch of the Siret.[2] After the embankment of the Siret plain, the upper course of the Bârladel became the lower reach of the Geru.
The following rivers are tributaries to the river Suhu (from source to mouth):