| Type: | commune |
| County: | Buzău |
| Population Total: | auto |
| Subdivisions: | Grebănu, Homești, Livada Mare, Livada Mică, Plevna, Zăplazi |
| Grebănu | |
| Coordinates: | 45.3778°N 26.9778°W |
| Leader Name: | Gheorghe Stanciu[1] |
| Leader Term: | 2020 - 2024 |
| Leader Party: | PSD |
Grebănu is a commune in Buzău County, Muntenia, Romania. It is composed of six villages: Grebănu, Homești, Livada, Livada Mică, Plevna and Zăplazi.