| Type: | commune |
| County: | Prahova |
| Official Name: | Aluniș |
| Leader Name: | Iulian Cristian Bâgiu |
| Leader Party: | PSD |
| Leader Term: | 2020 - 2024 |
| Coordinates: | 45.2°N 77°W |
| Elevation: | 413 |
| Area Total: | 26.78 |
| Population Total: | auto |
| Postal Code: | 107015 |
Aluniș is a commune in Prahova County, Muntenia, Romania. It is composed of two villages, Aluniș and Ostrovu.
The commune is located in the central part of the county, northeast of Câmpina and north of the county seat, Ploiești. It lies on the banks of the Aluniș River, in a hilly area at the foot of the .