Zirkuh Gaduganlu (, also Romanized as Zīrḵūh Gadūgānlū; also known as Gadūgānlū and Gadūgownlū) is a village in Sivkanlu Rural District, in the Central District of Shirvan County, North Khorasan Province, Iran. At the 2006 census, its population was 234, in 66 families.

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