| Bancu | |
| Pushpin Map: | Romania |
| Subdivision Type1: | Country |
| Subdivision Name1: | Romania |
| Subdivision Type2: | Counties |
| Subdivision Name2: | Suceava |
| Subdivision Type3: | Villages |
| Subdivision Name3: | Valea Bancului |
| Length: | 12km (07miles) |
| Source1: | Suhard Mountains |
| Mouth: | Teșna |
| Mouth Location: | Românești |
| Mouth Coordinates: | 47.368°N 25.179°W |
| Progression: | Teșna→ |
| Basin Size: | 101km2 |
| Tributaries Left: | Prislop, Făgețel, Ciotina |
| Tributaries Right: | Silvestru, Coșna |
The Bancu (in its upper course: Băncușor) is a left tributary of the river Teșna in Romania. It flows into the Teșna in Românești. Its length is 12km (07miles) and its basin size is 101km2.