| Type: | commune |
| County: | Gorj |
| Baia de Fier | |
| Subdivisions: | Baia de Fier, Cernădia |
| Leader Name: | Dumitru Turbăceanu[1] |
| Leader Party: | PSD |
| Leader Term: | 2020 - 2024 |
| Coordinates: | 45.1667°N 69°W |
| Elevation: | 568 |
| Area Total: | 120.25 |
| Population Total: | auto |
| Postal Code: | 217130 |
| Area Code: | +(40) x53 |
Baia de Fier is a commune in Gorj County, Oltenia, Romania. It is composed of two villages, Baia de Fier and Cernădia. It is traversed by the river Pârâul Galben; to the east flows the river Olteț. Peștera Muierilor (women's cave) is located here.
Baia de Fier is a sister city to Boccioleto, Italy since 2007.