Bian Darreh

Bian Darreh (, also Romanized as Bīān Darreh, Bayān Darreh, and Beyān Darreh) is a village in Buin Rural District, Nanur District, Baneh County, Kurdistan Province, Iran. At the 2006 census, its population was 473, in 86 families. The village is populated by Kurds.