Mehran County () is in Ilam Province, Iran. Its capital is the city of Mehran.
After the 2006 National Census, Malekshahi District was separated from the county in the establishment of Malekshahi County.
At the time of the 2006 National Census, the county's population was 55,271 in 10,960 households. The following census in 2011 counted 27,506 people in 6,884 households. The 2016 census measured the population of the county as 29,797 in 8,471 households.
Mehran County's population history and administrative structure over three consecutive censuses are shown in the following table.