Pain Khaf Rural District (Persian: دهستان پائين خواف) is in Sangan District of Khaf County, Razavi Khorasan province, Iran.

[4] At the time of the 2006 National Census, the rural district's population was 3,692 in 830 households.

[6] The 2016 census measured the population of the rural district as 4,777 in 1,221 households.

The most populous of its 15 villages was Barabad, with 4,452 people.

This Khaf County location article is a stub.