Gahru (Persian: گهرو‎‎, also Romanized as Gahrū; also known as Kahrū) is a city in the Central District of Kiar County, Chaharmahal and Bakhtiari Province, Iran. At the 2006 census, its population was 6,093, in 1,464 families.It is located approximately 40 km from Shahrekord. The town is one of the bigger grape producing areas in Iran. The kohrang fruit juice factory is situated in Gahru. The largest families residing in Gahru are of Reissi, Bahrami, Shahbazi and Ramezani descent.