The Central District of Mahneshan County () is in Zanjan province, Iran. Its capital is the city of Mah Neshan.
At the time of the 2006 National Census, the district's population was 23,424 in 5,307 households. The following census in 2011 counted 23,022 people in 5,942 households. The 2016 census measured the population of the district as 22,261 inhabitants in 6,722 households.