Borun (Persian: برون) is a village in, and the capital of, Borun Rural District of Eslamiyeh District, Ferdows County, South Khorasan province, Iran.

At the 2006 National Census, its population was 717 in 283 households, when it was in the Central District. The following census in 2011 counted 680 people in 260 households. The latest census in 2016 showed a population of 644 people in 251 households. It was the most populous village in its rural district.

In May 2020, Baghestan Rural District, Borun Rural District, and the city of Eslamiyeh were separated from the district in the establishment of Eslamiyeh District, which was divided into two rural districts and the city. At the same time, the village of Baghestan-e Olya was elevated to the status of the city of Baghestan.