Dargazin County () is in Hamadan province, Iran. Its capital is the city of Qorveh-ye Dargazin, whose population at the time of the 2016 National Census was 9,540 people in 2,973 households.
After the 2016 census, Qorveh-ye Darjazin District was separated from Razan County in the establishment of Dargazin County, which was divided into two districts of two rural districts each, with Qorveh-ye Dargazin as its capital. The villages of Karafs and Shahanjarin were elevated to city status.
Dargazin County's administrative structure is shown in the following table.