Chashm Rural District

Chashm Rural District is in Shahmirzad District of Mehdishahr County, Semnan province, Iran. Its capital is the village of Chashm.

At the National Census of 2006, its population (as a part of the former Mehdishahr District of Semnan County) was 6,414 in 1,679 households. There were 2,183 inhabitants in 674 households at the following census of 2011, by which time the district had been separated from the county in the establishment of Mehdishahr County. At the most recent census of 2016, the population of the rural district was 1,659 in 580 households. The most populous of its 102 villages was Chashm, with 566 people.