Darreh Niyak (, also Romanized as Darreh Nīyak, Darreh Neyak, and Darreh Nīāk) is a village in Poshtkuh Rural District, Falard District, Lordegan County, Chaharmahal and Bakhtiari Province, Iran. At the 2006 census, its population was 227, in 55 families. The village is populated by Lurs.
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