Ben County () is in Chaharmahal and Bakhtiari province, Iran. Its capital is the city of Ben.
In 2013, Ben District was separated from Shahrekord County in the establishment of Ben County, which was divided into two districts of two rural districts each, with Ben as its capital and only city at the time. In 2018, the village of Yan Cheshmeh was elevated to the status of a city.
At the time of the 2016 National Census, the county's population was 28,326, in 8,799 households.
Ben County's population and administrative structure are shown in the following table.