Niasan (Persian: نياسن, also Romanized as Nīāsan and Nīāsān; also known as Nīāsīn)[1] is a village in Siyarastaq Yeylaq Rural District, Rahimabad District, Rudsar County, Gilan Province, Iran.

At the 2006 census, its population was 93, in 27 families.

[2] This Rudsar County location article is a stub.

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