| Buhui | |
| Pushpin Map: | Romania |
| Subdivision Type1: | Country |
| Subdivision Name1: | Romania |
| Subdivision Type2: | Counties |
| Subdivision Name2: | Caraș-Severin County |
| Length: | 17km (11miles) |
| Mouth: | Caraș |
| Mouth Coordinates: | 45.1618°N 21.928°W |
| Basin Size: | 37km2 |
| Tributaries Right: | Glăvan, Certeț |
The Buhui is a left tributary of the river Caraș (Karaš) in Romania. It discharges into the Caraș upstream from Carașova. Its length is 17km (11miles) and its basin size is 37km2. The river first flows through Lake Buhui. Thereafter it flows through the Buhui Cave and, after emerging from the cave, flows through a reach of narrow gorges in the Semenic-Cheile Carașului National Park before joining the Caraș.