| Image Coa: | Wappen Niederviehbach.svg |
| Coordinates: | 48.6167°N 35°W |
| Image Plan: | Niederviehbach in DGF.png |
| State: | Bayern |
| Region: | Niederbayern |
| District: | Dingolfing-Landau |
| Elevation: | 392 |
| Area: | 29.62 |
| Postal Code: | 84183 |
| Area Code: | 08702 |
| Licence: | DGF |
| Gemeindeschlüssel: | 09 2 79 130 |
| Website: | www.niederviehbach.de |
| Mayor: | Johannes Birkner[1] |
| Leader Term: | 2019 - 25 |
| Party: | CSU |
Niederviehbach is a municipality in the district of Dingolfing-Landau in Bavaria in Germany. It lies on the Isar River.