| Type: | commune |
| County: | Vaslui |
| Lunca Banului | |
| Subdivisions: | Broscoșești, Condrea, Focșa, Lunca Banului, Lunca Veche, Oțetoaia, Răducani |
| Leader Name: | Dănuț Tofan |
| Leader Party: | PSD |
| Leader Term: | 2020 - 2024 |
| Coordinates: | 46.595°N 28.1683°W |
| Elevation: | 38 |
| Area Total: | 83.09 |
| Population Total: | auto |
| Postal Code: | 737340 |
| Area Code: | +(40) x37 |
Lunca Banului is a commune in Vaslui County, Western Moldavia, Romania. It is composed of seven villages: Broscoșești, Condrea, Focșa, Lunca Banului, Lunca Veche, Oțetoaia, and Răducani.
The commune is located in the eastern part of Vaslui County, about southeast of the county seat, Vaslui, on the Moldova–Romania border. It lies on the right bank of the Prut River, which marks the border; the Pruteț, a right tributary of the Prut, flows through Lunca Banului, Oțetoaia, and Lunca Veche villages.