The Iren () is a river in Perm Krai, Russia, a left tributary of the Sylva. It is long, with a drainage basin of . It starts near village Verh-Iren, in Oktyabrsky District and flows through Uinsky, Ordinsky and Kungursky districts of Perm Krai.
Main tributaries: Left: Uyas, Aspa, Syp, Bym, Bolshoy Ashap, Maly Ashap, Turka Right: Telyos, Kungur.
References
External links Iren in encyclopedia of Perm Krai