| Bârsa Fierului | |
| Pushpin Map: | Romania |
| Subdivision Type1: | Country |
| Subdivision Name1: | Romania |
| Subdivision Type2: | Counties |
| Subdivision Name2: | Brașov County |
| Length: | 15km (09miles) |
| Source1: | Făgăraș Mountains |
| Mouth: | Bârsa |
| Mouth Coordinates: | 45.58°N 25.2701°W |
| Basin Size: | 50km2 |
| Tributaries Right: | Valea Strâmbelor, Plaiu |
| Custom Label: | River code |
| Custom Data: | VIII.1.50.2 |
The Bârsa Fierului is a left tributary of the river Bârsa in Romania. It source is in the eastern part of the Făgăraș Mountains. Its length is 15km (09miles) and its basin size is 50km2.