Molmys River (Russian: Молмыс) is a river in Perm Krai, Russia, a left tributary of the Yazva River. It is 100 kilometres (62 mi) long, and the area of its drainage basin is 1,090 square kilometres (420 sq mi). It starts on the southeastern slope of Mount Vogulsky Kamen, in the middle part of the Kvarkush mountain range. It flows through the southeastern portion of Krasnovishersky District, its mouth located upstream of the settlement Krasnyi Bereg.