The Central District of Kashmar County () is in Razavi Khorasan province, Iran. Its capital is the city of Kashmar.
At the time of the 2006 National Census, the district's population was 119,507 in 32,143 households. The following census in 2011 counted 130,891 people in 38,726 households. The 2016 census measured the population of the district as 143,650 inhabitants in 44,774 households.