The Central District of Aslan Duz County () is in Ardabil province, Iran. Its capital is the city of Aslan Duz, whose population at the time of the 2016 National Census was 6,348 people in 1,760 households.
In 2019, Aslan Duz District was separated from Parsabad County in the establishment of Aslan Duz County, which was divided into two districts of two rural districts each, with Aslan Duz as its capital and only city at the time.