The Arga-Yuryakh (Russian: Арга-Юрях; Yakut: Арҕаа Үрэх) is a river in Sakha Republic (Yakutia), Russia. It is one of the major tributaries of the Omoloy. The river has a length of 214 kilometres (133 mi) and a drainage basin area of 5,530 square kilometres (2,140 sq mi). The river flows north of the Arctic Circle, across desolate tundra territories of the East Siberian Lowland. Its basin falls within Ust-Yansky and Bulunsky districts. The name of the river comes from the Yakut "Argaa/үrekh" (Арҕаа-үрэх), meaning "western/river".