The Central District of Nahavand County () is in Hamadan province, Iran. Its capital is the city of Nahavand.
At the time of the 2006 National Census, the district's population was 116,092 in 30,864 households. The following census in 2011 counted 119,191 people in 35,849 households. The 2016 census measured the population of the district as 117,270 inhabitants in 36,778 households.