The Central District of Khomeyn County () is in Markazi province, Iran. Its capital is the city of Khomeyn.
At the time of the 2006 National Census, the district's population was 94,106 in 26,001 households. The following census in 2011 counted 94,687 people in 29,472 households. The 2016 census measured the population of the district as 94,109 inhabitants in 30,913 households.