The Central District of Masal County () is in northwestern Iran's Gilan province. Its capital is the city of Masal.
At the time of the 2006 National Census, the district's population was 26,063 in 6,886 households. The following census in 2011 counted 28,797 people in 8,530 households. The 2016 census measured the population of the district as 30,642 inhabitants in 9,946 households.