The Central District of Alborz County () is in Qazvin province, Iran. Its capital is the city of Alvand.
At the time of the 2006 National Census, the district's population was 94,853 in 24,318 households. The following census in 2011 counted 104,618 people in 30,126 households. The 2016 census measured the population of the district as 103,962 inhabitants in 32,024 households.