Gerd Ab (Persian: گرداب, also Romanized as Gerd Āb; also known as Gerdāb Langā and Langā)[1] is a village in Langarud Rural District, Salman Shahr District, Abbasabad County, Mazandaran Province, Iran.

At the 2006 census, its population was 328, in 83 families.

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

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