The Central District of Qazvin County () is in Qazvin province, Iran. Its capital is the city of Qazvin.
Persians, Azeris and Tats are the largest ethnic groups of the Central District of Qazvin County.
At the time of the 2006 National Census, the district's population was 469,367 in 125,770 households. The following census in 2011 counted 509,953 people in 150,590 households. The 2016 census measured the population of the district as 517,952 inhabitants in 161,532 households.