The Central District of Roshtkhar County () is in Razavi Khorasan province, Iran. Its capital is the city of Roshtkhar.
At the time of the 2006 National Census, the district's population was 42,621 in 10,221 households. The following census in 2011 counted 46,185 people in 12,618 households. The 2016 census measured the population of the district as 46,347 inhabitants in 13,711 households.