The Central District of Ardestan County () is in Isfahan province, Iran. Its capital is the city of Ardestan.
In 2018, Garmsir and Hombarat Rural Districts, and the city of Mahabad, were separated from the district in the establishment of Mahabad District.
At the time of the 2006 National Census, the district's population was 30,838 in 8,958 households. The following census in 2011 counted 29,011 people in 9,169 households. The 2016 census counted the population of the district as 29,427 inhabitants in 9,960 households.