The Central District of Ahar County () is in East Azerbaijan province, Iran. Its capital is the city of Ahar.
In 2018, Qeshlaq Rural District was separated from the district in the formation of Fandoqlu District.
At the time of the 2006 National Census, the district's population was 125,253 in 29,323 households. The following census in 2011 counted 129,022 people in 34,244 households. The 2016 census measured the population of the district as 133,829 inhabitants living in 40,048 households.