| Valea Boiului | |
| Pushpin Map: | Romania |
| Subdivision Type1: | Country |
| Subdivision Name1: | Romania |
| Subdivision Type2: | Counties |
| Subdivision Name2: | Bihor County |
| Length: | 8km (05miles) |
| Mouth: | Crișul Repede |
| Mouth Location: | Lorău |
| Mouth Coordinates: | 46.9186°N 22.6189°W |
| Basin Size: | 21km2 |
The Valea Boiului is a small left tributary of the river Crișul Repede in Romania. It discharges into the Crișul Repede in Lorău. Its length is 8km (05miles) and its basin size is 21km2.