Kowsar County () is in Ardabil province, Iran. Its capital is the city of Kivi.
The village of Firuzabad was converted to a city in 2023.
At the time of the 2006 National Census, the county's population was 27,472 in 6,085 households. The following census in 2011 counted 26,198 people in 6,960 households. The 2016 census measured the population of the county as 22,127 in 6,586 households.
Kowsar County's population history and administrative structure over three consecutive censuses are shown in the following table.