The Central District of Nazarabad County () is in Alborz province, Iran. Its capital is the city of Nazarabad.
In 2007, Jamal ol Din Rural District was created in the district, and Najmabad Rural District was separated from Tankaman District to join the Central District.
At the time of the 2006 National Census, the district's population was 103,476 in 26,060 households. The 2016 census measured the population of the district as 133,712 people in 40,857 households.