| Type: | commune |
| County: | Ilfov |
| Petrăchioaia | |
| Leader Name: | Mihai Dobre |
| Leader Party: | PNL |
| Leader Term: | 2020 - 2024 |
| Coordinates: | 44.5833°N 45°W |
| Elevation: | 80 |
| Area Total: | 57 |
| Population Total: | auto |
| Postal Code: | 077155 |
Petrăchioaia is a commune in the east of Ilfov County, Muntenia, Romania. It is composed of four villages: Măineasca, Surlari, Petrăchioaia, and Vânători. Its name is a feminine form of Petrache, which in turn is a name of Greek origin, derived from Petrakis.