Mehr Rural District (Persian: دهستان مهر) is in Bashtin District of Davarzan County, Razavi Khorasan province, Iran. Its capital is the village of Mehr.

After the 2011 National Census, Davarzan District was separated from Sabzevar County in the establishment of Davarzan County, which was divided into two districts of two rural districts each, with the city of Davarzan as its capital and only city.

At the most recent census of 2016, the population of the rural district was 5,673 in 1,868 households, by which time the district had been separated from the county to establish Davarzan County. The most populous of its 23 villages was Mehr, with 1,812 people.