| Yamzhach | |
| Mouth Coordinates: | 61.2888°N 58.2516°W |
| Subdivision Type1: | Country |
| Length: | 34km (21miles) |
Yamzhach (Russian: Ямжач) is a river in Perm Krai, Russia, a left tributary of the Kolva, which in turn is a tributary of the Vishera. The river is 34km (21miles) long.[1] It flows into the Kolva 380km (240miles) from the Kolva's mouth. The main tributaries are the Passavozh (left) and Zapadnaya (left) rivers.