| Viga | |
| Subdivision Type1: | Country |
| Subdivision Name1: | Russia |
| Length: | 175km (109miles) |
| Mouth: | Unzha |
| Mouth Coordinates: | 59.2289°N 43.6794°W |
| Progression: | Unzha→ |
| Basin Size: | 3360km2 |
The Viga (Russian: Вига) is a river in Kostroma Oblast in Russia, a right tributary of the Unzha. It is 175km (109miles) long, and its basin covers 3360km2.[1]