Gahgah Ahmad (, also Romanized as Gahgah Aḩmad; also known as Gacheh Aḩmad and Kageh Aḩmad) is a village in Tayebi-ye Garmsiri-ye Shomali Rural District, in the Central District of Landeh County, Kohgiluyeh and Boyer-Ahmad Province, Iran. At the 2006 census, its population was 18, in 5 families.

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