The Iren (Russian: Ире́нь) is a river in Perm Krai, Russia, a left tributary of the Sylva.

It is 214 kilometres (133 mi) long, with a drainage basin of 6,110 square kilometres (2,360 sq mi).

[1] It starts near village Verh-Iren, in Oktyabrsky District and flows through Uinsky, Ordinsky and Kungursky districts of Perm Krai.

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