| Type: | commune |
| County: | Prahova |
| Population Total: | auto |
| Coordinates: | 45.1833°N 71°W |
| Official Name: | Brebu |
Brebu is a commune in Prahova County, Muntenia, Romania. It is composed of four villages: Brebu Mânăstirei (the commune centre), Brebu Megieșesc, Pietriceaua and Podu Cheii.
The commune is located in the northern part of the county. The river Purcaru flows through it.