| Type: | commune |
| County: | Buzău |
| Population Total: | auto |
| Subdivisions: | Caragele, Luciu |
| Luciu | |
| Coordinates: | 44.9694°N 27.0792°W |
| Leader Name: | Mircea Frățilă[1] |
| Leader Term: | 2020 - 2024 |
| Leader Party: | PSD |
Luciu is a commune in Buzău County, Muntenia, Romania. It is composed of two villages, Caragele and Luciu.
The Caragele gas field (with the largest onshore gas reserves in Romania) is located on the administrative territory of the commune.