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

At the National Census of 2006, its population (as a part of the Central District) was 2,048 in 760 households. There were 1,835 inhabitants in 719 households at the following census of 2011. At the most recent census of 2016, the population of the rural district was 1,721 in 687 households. The most populous of its 40 villages was Borun, with 644 people.

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.