Takab Rural District () is in the Central District of Dargaz County, Razavi Khorasan province, Iran. Its capital is the village of Khakhian.
At the time of the 2006 National Census, the rural district's population was 5,892 in 1,627 households. There were 5,533 inhabitants in 1,687 households at the following census of 2011. The 2016 census measured the population of the rural district as 5,046 in 1,657 households. The most populous of its 38 villages was Taj ol Din, with 1,084 people.