The Central District of Mahallat County () is in Markazi province, Iran. Its capital is the city of Mahallat.
At the time of the 2006 National Census, the district's population was 48,458 in 14,139 households. The following census in 2011 counted 53,381 people in 16,768 households. The 2016 census measured the population of the district as 55,342 inhabitants in 18,436 households.