Kuhenjan (, also Romanized as Koohenjan, Kūhenjān and Kūhanjān; also known as Kūh-e Īnjūn and Kūhinjūn) is a city in, and the capital of, Kuhenjan District of Sarvestan County, Fars province, Iran.
At the 2006 census, its population was 2,930 in 750 households, when it was a village in Kuhenjan Rural District of the former Sarvestan District of Shiraz County. The following census in 2011 counted 3,739 people in 1,036 households, by which time the district had been separated from the county in the establishment of Sarvestan County. The village of Kuhenjan was elevated to the status of a city. The latest census in 2016 showed a population of 3,281 people in 1,041 households.