| Ociu | |
| Pushpin Map: | Romania |
| Subdivision Type1: | Country |
| Subdivision Name1: | Romania |
| Subdivision Type2: | Counties |
| Subdivision Name2: | Arad, Hunedoara |
| Subdivision Type3: | Villages |
| Subdivision Name3: | Țohești, Ocișor |
| Length: | 11km (07miles) |
| Mouth: | Crișul Alb |
| Mouth Location: | Ocișor |
| Mouth Coordinates: | 46.2242°N 22.561°W |
| Basin Size: | 16km2 |
The Ociu is a right tributary of the river Crișul Alb in Romania. It discharges into the Crișul Alb in Ocișor. Its length is 11km (07miles) and its basin size is 16km2.